Low-radio-frequency eclipses of the redback pulsar J2215+5135 observed in the image plane with LOFAR.
Identifieur interne : 001B68 ( Main/Exploration ); précédent : 001B67; suivant : 001B69Low-radio-frequency eclipses of the redback pulsar J2215+5135 observed in the image plane with LOFAR.
Auteurs : J W Broderick [Pays-Bas] ; R P Fender [Royaume-Uni] ; R P Breton [Royaume-Uni] ; A J Stewart [Royaume-Uni] ; A. Rowlinson [Pays-Bas] ; J D Swinbank [Pays-Bas] ; J W T. Hessels [Pays-Bas] ; T D Staley [Royaume-Uni] ; A J Van Der Horst [États-Unis] ; M E Bell [Australie] ; D. Carbone [Pays-Bas] ; Y. Cendes [Pays-Bas] ; S. Corbel [France] ; J. Eislöffel [Allemagne] ; H. Falcke [Pays-Bas] ; J-M Grie Meier [France] ; T E Hassall [Royaume-Uni] ; P. Jonker [Pays-Bas] ; M. Kramer [Royaume-Uni] ; M. Kuniyoshi [Japon] ; C J Law [États-Unis] ; S. Markoff [Pays-Bas] ; G J Molenaar [Pays-Bas] ; M. Pietka [Royaume-Uni] ; L H A. Scheers [Pays-Bas] ; M. Serylak [Afrique du Sud] ; B W Stappers [Royaume-Uni] ; S. Ter Veen [Pays-Bas] ; J. Van Leeuwen [Pays-Bas] ; R A M J. Wijers [Pays-Bas] ; R. Wijnands [Pays-Bas] ; M W Wise [Pays-Bas] ; P. Zarka [France]Source :
- Monthly notices of the Royal Astronomical Society [ 0035-8711 ] ; 2016.
Abstract
The eclipses of certain types of binary millisecond pulsars (i.e. 'black widows' and 'redbacks') are often studied using high-time-resolution, 'beamformed' radio observations. However, they may also be detected in images generated from interferometric data. As part of a larger imaging project to characterize the variable and transient sky at radio frequencies <200 MHz, we have blindly detected the redback system PSR J2215+5135 as a variable source of interest with the Low-Frequency Array (LOFAR). Using observations with cadences of two weeks - six months, we find preliminary evidence that the eclipse duration is frequency dependent (∝ν(-0.4)), such that the pulsar is eclipsed for longer at lower frequencies, in broad agreement with beamformed studies of other similar sources. Furthermore, the detection of the eclipses in imaging data suggests an eclipsing medium that absorbs the pulsed emission, rather than scattering it. Our study is also a demonstration of the prospects of finding pulsars in wide-field imaging surveys with the current generation of low-frequency radio telescopes.
DOI: 10.1093/mnras/stw794
PubMed: 27279782
Affiliations:
- Afrique du Sud, Allemagne, Australie, France, Japon, Pays-Bas, Royaume-Uni, États-Unis
- Angleterre, Californie, District de Columbia, Grand Manchester, Hollande-Septentrionale, New Jersey, Nouvelle-Galles du Sud, Oxfordshire, Région de Kantō
- Amsterdam, Manchester, Oxford, Princeton (New Jersey), Sydney, Tokyo
- Université d'Amsterdam, Université d'Oxford, Université de Manchester, Université de Princeton, Université de Sydney
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Rowlinson</name><affiliation wicri:level="4"><nlm:affiliation>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Swinbank, J D" sort="Swinbank, J D" uniqKey="Swinbank J" first="J D" last="Swinbank">J D Swinbank</name><affiliation wicri:level="4"><nlm:affiliation>Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université de Princeton</orgName><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName></affiliation></author><author><name sortKey="Hessels, J W T" sort="Hessels, J W T" uniqKey="Hessels J" first="J W T" last="Hessels">J W T. Hessels</name><affiliation wicri:level="4"><nlm:affiliation>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Staley, T D" sort="Staley, T D" uniqKey="Staley T" first="T D" last="Staley">T D Staley</name><affiliation wicri:level="4"><nlm:affiliation>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ</wicri:regionArea><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Van Der Horst, A J" sort="Van Der Horst, A J" uniqKey="Van Der Horst A" first="A J" last="Van Der Horst">A J Van Der Horst</name><affiliation wicri:level="2"><nlm:affiliation>Department of Physics, The George Washington University, 725 21st Street NW, Washington, DC 20052, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Physics, The George Washington University, 725 21st Street NW, Washington, DC 20052</wicri:regionArea><placeName><region type="state">District de Columbia</region></placeName></affiliation></author><author><name sortKey="Bell, M E" sort="Bell, M E" uniqKey="Bell M" first="M E" last="Bell">M E Bell</name><affiliation wicri:level="4"><nlm:affiliation>CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW 1710, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO), The University of Sydney, NSW 2006, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW 1710, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO), The University of Sydney, NSW 2006</wicri:regionArea><orgName type="university">Université de Sydney</orgName><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Carbone, D" sort="Carbone, D" uniqKey="Carbone D" first="D" last="Carbone">D. Carbone</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Cendes, Y" sort="Cendes, Y" uniqKey="Cendes Y" first="Y" last="Cendes">Y. Cendes</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Corbel, S" sort="Corbel, S" uniqKey="Corbel S" first="S" last="Corbel">S. Corbel</name><affiliation wicri:level="1"><nlm:affiliation>Laboratoire AIM (CEA/IRFU - CNRS/INSU - Université Paris Diderot), CEA DSM/IRFU/SAp, F-91191 Gif-sur-Yvette, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire AIM (CEA/IRFU - CNRS/INSU - Université Paris Diderot), CEA DSM/IRFU/SAp, F-91191 Gif-sur-Yvette, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay</wicri:regionArea><wicri:noRegion>18330 Nançay</wicri:noRegion><wicri:noRegion>18330 Nançay</wicri:noRegion></affiliation></author><author><name sortKey="Eisloffel, J" sort="Eisloffel, J" uniqKey="Eisloffel J" first="J" last="Eislöffel">J. Eislöffel</name><affiliation wicri:level="1"><nlm:affiliation>Thüringer Landessternwarte, Sternwarte 5, D-07778 Tautenburg, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Thüringer Landessternwarte, Sternwarte 5, D-07778 Tautenburg</wicri:regionArea><wicri:noRegion>07778 Tautenburg</wicri:noRegion><wicri:noRegion>07778 Tautenburg</wicri:noRegion><wicri:noRegion>D-07778 Tautenburg</wicri:noRegion></affiliation></author><author><name sortKey="Falcke, H" sort="Falcke, H" uniqKey="Falcke H" first="H" last="Falcke">H. Falcke</name><affiliation wicri:level="1"><nlm:affiliation>Department of Astrophysics/IMAPP, Radboud University Nijmegen, PO Box 9010, NL-6500 GL Nijmegen, the Netherlands; ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Department of Astrophysics/IMAPP, Radboud University Nijmegen, PO Box 9010, NL-6500 GL Nijmegen, the Netherlands; ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo</wicri:regionArea><wicri:noRegion>NL-7990 AA Dwingeloo</wicri:noRegion></affiliation></author><author><name sortKey="Grie Meier, J M" sort="Grie Meier, J M" uniqKey="Grie Meier J" first="J-M" last="Grie Meier">J-M Grie Meier</name><affiliation wicri:level="1"><nlm:affiliation>LPC2E - Université d'Orléans/CNRS, F-45071 Orléans cedex 2, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>LPC2E - Université d'Orléans/CNRS, F-45071 Orléans cedex 2, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay</wicri:regionArea><wicri:noRegion>18330 Nançay</wicri:noRegion><wicri:noRegion>18330 Nançay</wicri:noRegion></affiliation></author><author><name sortKey="Hassall, T E" sort="Hassall, T E" uniqKey="Hassall T" first="T E" last="Hassall">T E Hassall</name><affiliation wicri:level="4"><nlm:affiliation>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ</wicri:regionArea><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Jonker, P" sort="Jonker, P" uniqKey="Jonker P" first="P" last="Jonker">P. Jonker</name><affiliation wicri:level="1"><nlm:affiliation>SRON, Netherlands Institute for Space Research, Sorbonnelaan 2, NL-3584 CA Utrecht, the Netherlands; Department of Astrophysics/IMAPP, Radboud University Nijmegen, PO Box 9010, NL-6500 GL Nijmegen, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>SRON, Netherlands Institute for Space Research, Sorbonnelaan 2, NL-3584 CA Utrecht, the Netherlands; Department of Astrophysics/IMAPP, Radboud University Nijmegen, PO Box 9010, NL-6500 GL Nijmegen</wicri:regionArea><wicri:noRegion>NL-6500 GL Nijmegen</wicri:noRegion></affiliation></author><author><name sortKey="Kramer, M" sort="Kramer, M" uniqKey="Kramer M" first="M" last="Kramer">M. Kramer</name><affiliation wicri:level="4"><nlm:affiliation>Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany; Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany; Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL</wicri:regionArea><orgName type="university">Université de Manchester</orgName><placeName><settlement type="city">Manchester</settlement><region type="nation">Angleterre</region><region nuts="2" type="region">Grand Manchester</region></placeName></affiliation></author><author><name sortKey="Kuniyoshi, M" sort="Kuniyoshi, M" uniqKey="Kuniyoshi M" first="M" last="Kuniyoshi">M. Kuniyoshi</name><affiliation wicri:level="1"><nlm:affiliation>NAOJ Chile Observatory, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan.</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>NAOJ Chile Observatory, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588</wicri:regionArea><placeName><settlement type="city">Tokyo</settlement><region type="région">Région de Kantō</region></placeName></affiliation></author><author><name sortKey="Law, C J" sort="Law, C J" uniqKey="Law C" first="C J" last="Law">C J Law</name><affiliation wicri:level="2"><nlm:affiliation>Department of Astronomy and Radio Astronomy Lab, University of California, Berkeley, CA, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Astronomy and Radio Astronomy Lab, University of California, Berkeley, CA</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Markoff, S" sort="Markoff, S" uniqKey="Markoff S" first="S" last="Markoff">S. Markoff</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Molenaar, G J" sort="Molenaar, G J" uniqKey="Molenaar G" first="G J" last="Molenaar">G J Molenaar</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands; Department of Physics and Electronics, Rhodes University, PO Box 94, Grahamstown 6140 South Africa.</nlm:affiliation><orgName type="university">Université d'Amsterdam</orgName><country>Pays-Bas</country><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Pietka, M" sort="Pietka, M" uniqKey="Pietka M" first="M" last="Pietka">M. Pietka</name><affiliation wicri:level="4"><nlm:affiliation>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ</wicri:regionArea><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Scheers, L H A" sort="Scheers, L H A" uniqKey="Scheers L" first="L H A" last="Scheers">L H A. Scheers</name><affiliation wicri:level="4"><nlm:affiliation>Centrum Wiskunde and Informatica, Science Park 123, NL-1098 XG Amsterdam, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Centrum Wiskunde and Informatica, Science Park 123, NL-1098 XG Amsterdam, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Serylak, M" sort="Serylak, M" uniqKey="Serylak M" first="M" last="Serylak">M. Serylak</name><affiliation wicri:level="1"><nlm:affiliation>Department of Physics and Astronomy, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa; SKA South Africa, 3rd Floor, The Park, Park Road, Pinelands 7405, South Africa.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Department of Physics and Astronomy, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa; SKA South Africa, 3rd Floor, The Park, Park Road, Pinelands 7405</wicri:regionArea><wicri:noRegion>Pinelands 7405</wicri:noRegion></affiliation></author><author><name sortKey="Stappers, B W" sort="Stappers, B W" uniqKey="Stappers B" first="B W" last="Stappers">B W Stappers</name><affiliation wicri:level="4"><nlm:affiliation>Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL</wicri:regionArea><orgName type="university">Université de Manchester</orgName><placeName><settlement type="city">Manchester</settlement><region type="nation">Angleterre</region><region nuts="2" type="region">Grand Manchester</region></placeName></affiliation></author><author><name sortKey="Ter Veen, S" sort="Ter Veen, S" uniqKey="Ter Veen S" first="S" last="Ter Veen">S. Ter Veen</name><affiliation wicri:level="1"><nlm:affiliation>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo</wicri:regionArea><wicri:noRegion>NL-7990 AA Dwingeloo</wicri:noRegion></affiliation></author><author><name sortKey="Van Leeuwen, J" sort="Van Leeuwen, J" uniqKey="Van Leeuwen J" first="J" last="Van Leeuwen">J. Van Leeuwen</name><affiliation wicri:level="4"><nlm:affiliation>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Wijers, R A M J" sort="Wijers, R A M J" uniqKey="Wijers R" first="R A M J" last="Wijers">R A M J. Wijers</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Wijnands, R" sort="Wijnands, R" uniqKey="Wijnands R" first="R" last="Wijnands">R. Wijnands</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Wise, M W" sort="Wise, M W" uniqKey="Wise M" first="M W" last="Wise">M W Wise</name><affiliation wicri:level="4"><nlm:affiliation>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Zarka, P" sort="Zarka, P" uniqKey="Zarka P" first="P" last="Zarka">P. Zarka</name><affiliation wicri:level="1"><nlm:affiliation>LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen, F-92195 Meudon, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen, F-92195 Meudon, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay</wicri:regionArea><wicri:noRegion>18330 Nançay</wicri:noRegion><wicri:noRegion>18330 Nançay</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2016">2016</date><idno type="RBID">pubmed:27279782</idno><idno type="pmid">27279782</idno><idno type="doi">10.1093/mnras/stw794</idno><idno type="wicri:Area/PubMed/Corpus">002017</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">002017</idno><idno type="wicri:Area/PubMed/Curation">001F92</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">001F92</idno><idno type="wicri:Area/PubMed/Checkpoint">001F92</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">001F92</idno><idno type="wicri:Area/Ncbi/Merge">003669</idno><idno type="wicri:Area/Ncbi/Curation">003669</idno><idno type="wicri:Area/Ncbi/Checkpoint">003669</idno><idno type="wicri:doubleKey">0035-8711:2016:Broderick J:low:radio:frequency</idno><idno type="wicri:Area/Main/Merge">001B64</idno><idno type="wicri:Area/Main/Curation">001B68</idno><idno type="wicri:Area/Main/Exploration">001B68</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Low-radio-frequency eclipses of the redback pulsar J2215+5135 observed in the image plane with LOFAR.</title><author><name sortKey="Broderick, J W" sort="Broderick, J W" uniqKey="Broderick J" first="J W" last="Broderick">J W Broderick</name><affiliation wicri:level="4"><nlm:affiliation>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK; ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK; ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo</wicri:regionArea><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Fender, R P" sort="Fender, R P" uniqKey="Fender R" first="R P" last="Fender">R P Fender</name><affiliation wicri:level="4"><nlm:affiliation>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ</wicri:regionArea><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Breton, R P" sort="Breton, R P" uniqKey="Breton R" first="R P" last="Breton">R P Breton</name><affiliation wicri:level="4"><nlm:affiliation>Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ</wicri:regionArea><orgName type="university">Université de Manchester</orgName><placeName><settlement type="city">Manchester</settlement><region type="nation">Angleterre</region><region nuts="2" type="region">Grand Manchester</region></placeName></affiliation></author><author><name sortKey="Stewart, A J" sort="Stewart, A J" uniqKey="Stewart A" first="A J" last="Stewart">A J Stewart</name><affiliation wicri:level="4"><nlm:affiliation>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ</wicri:regionArea><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Rowlinson, A" sort="Rowlinson, A" uniqKey="Rowlinson A" first="A" last="Rowlinson">A. Rowlinson</name><affiliation wicri:level="4"><nlm:affiliation>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Swinbank, J D" sort="Swinbank, J D" uniqKey="Swinbank J" first="J D" last="Swinbank">J D Swinbank</name><affiliation wicri:level="4"><nlm:affiliation>Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université de Princeton</orgName><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName></affiliation></author><author><name sortKey="Hessels, J W T" sort="Hessels, J W T" uniqKey="Hessels J" first="J W T" last="Hessels">J W T. Hessels</name><affiliation wicri:level="4"><nlm:affiliation>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Staley, T D" sort="Staley, T D" uniqKey="Staley T" first="T D" last="Staley">T D Staley</name><affiliation wicri:level="4"><nlm:affiliation>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ</wicri:regionArea><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Van Der Horst, A J" sort="Van Der Horst, A J" uniqKey="Van Der Horst A" first="A J" last="Van Der Horst">A J Van Der Horst</name><affiliation wicri:level="2"><nlm:affiliation>Department of Physics, The George Washington University, 725 21st Street NW, Washington, DC 20052, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Physics, The George Washington University, 725 21st Street NW, Washington, DC 20052</wicri:regionArea><placeName><region type="state">District de Columbia</region></placeName></affiliation></author><author><name sortKey="Bell, M E" sort="Bell, M E" uniqKey="Bell M" first="M E" last="Bell">M E Bell</name><affiliation wicri:level="4"><nlm:affiliation>CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW 1710, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO), The University of Sydney, NSW 2006, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW 1710, Australia; ARC Centre of Excellence for All-sky Astrophysics (CAASTRO), The University of Sydney, NSW 2006</wicri:regionArea><orgName type="university">Université de Sydney</orgName><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName></affiliation></author><author><name sortKey="Carbone, D" sort="Carbone, D" uniqKey="Carbone D" first="D" last="Carbone">D. Carbone</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Cendes, Y" sort="Cendes, Y" uniqKey="Cendes Y" first="Y" last="Cendes">Y. Cendes</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Corbel, S" sort="Corbel, S" uniqKey="Corbel S" first="S" last="Corbel">S. Corbel</name><affiliation wicri:level="1"><nlm:affiliation>Laboratoire AIM (CEA/IRFU - CNRS/INSU - Université Paris Diderot), CEA DSM/IRFU/SAp, F-91191 Gif-sur-Yvette, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire AIM (CEA/IRFU - CNRS/INSU - Université Paris Diderot), CEA DSM/IRFU/SAp, F-91191 Gif-sur-Yvette, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay</wicri:regionArea><wicri:noRegion>18330 Nançay</wicri:noRegion><wicri:noRegion>18330 Nançay</wicri:noRegion></affiliation></author><author><name sortKey="Eisloffel, J" sort="Eisloffel, J" uniqKey="Eisloffel J" first="J" last="Eislöffel">J. Eislöffel</name><affiliation wicri:level="1"><nlm:affiliation>Thüringer Landessternwarte, Sternwarte 5, D-07778 Tautenburg, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Thüringer Landessternwarte, Sternwarte 5, D-07778 Tautenburg</wicri:regionArea><wicri:noRegion>07778 Tautenburg</wicri:noRegion><wicri:noRegion>07778 Tautenburg</wicri:noRegion><wicri:noRegion>D-07778 Tautenburg</wicri:noRegion></affiliation></author><author><name sortKey="Falcke, H" sort="Falcke, H" uniqKey="Falcke H" first="H" last="Falcke">H. Falcke</name><affiliation wicri:level="1"><nlm:affiliation>Department of Astrophysics/IMAPP, Radboud University Nijmegen, PO Box 9010, NL-6500 GL Nijmegen, the Netherlands; ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Department of Astrophysics/IMAPP, Radboud University Nijmegen, PO Box 9010, NL-6500 GL Nijmegen, the Netherlands; ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo</wicri:regionArea><wicri:noRegion>NL-7990 AA Dwingeloo</wicri:noRegion></affiliation></author><author><name sortKey="Grie Meier, J M" sort="Grie Meier, J M" uniqKey="Grie Meier J" first="J-M" last="Grie Meier">J-M Grie Meier</name><affiliation wicri:level="1"><nlm:affiliation>LPC2E - Université d'Orléans/CNRS, F-45071 Orléans cedex 2, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>LPC2E - Université d'Orléans/CNRS, F-45071 Orléans cedex 2, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay</wicri:regionArea><wicri:noRegion>18330 Nançay</wicri:noRegion><wicri:noRegion>18330 Nançay</wicri:noRegion></affiliation></author><author><name sortKey="Hassall, T E" sort="Hassall, T E" uniqKey="Hassall T" first="T E" last="Hassall">T E Hassall</name><affiliation wicri:level="4"><nlm:affiliation>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ</wicri:regionArea><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Jonker, P" sort="Jonker, P" uniqKey="Jonker P" first="P" last="Jonker">P. Jonker</name><affiliation wicri:level="1"><nlm:affiliation>SRON, Netherlands Institute for Space Research, Sorbonnelaan 2, NL-3584 CA Utrecht, the Netherlands; Department of Astrophysics/IMAPP, Radboud University Nijmegen, PO Box 9010, NL-6500 GL Nijmegen, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>SRON, Netherlands Institute for Space Research, Sorbonnelaan 2, NL-3584 CA Utrecht, the Netherlands; Department of Astrophysics/IMAPP, Radboud University Nijmegen, PO Box 9010, NL-6500 GL Nijmegen</wicri:regionArea><wicri:noRegion>NL-6500 GL Nijmegen</wicri:noRegion></affiliation></author><author><name sortKey="Kramer, M" sort="Kramer, M" uniqKey="Kramer M" first="M" last="Kramer">M. Kramer</name><affiliation wicri:level="4"><nlm:affiliation>Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany; Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany; Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL</wicri:regionArea><orgName type="university">Université de Manchester</orgName><placeName><settlement type="city">Manchester</settlement><region type="nation">Angleterre</region><region nuts="2" type="region">Grand Manchester</region></placeName></affiliation></author><author><name sortKey="Kuniyoshi, M" sort="Kuniyoshi, M" uniqKey="Kuniyoshi M" first="M" last="Kuniyoshi">M. Kuniyoshi</name><affiliation wicri:level="1"><nlm:affiliation>NAOJ Chile Observatory, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan.</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>NAOJ Chile Observatory, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588</wicri:regionArea><placeName><settlement type="city">Tokyo</settlement><region type="région">Région de Kantō</region></placeName></affiliation></author><author><name sortKey="Law, C J" sort="Law, C J" uniqKey="Law C" first="C J" last="Law">C J Law</name><affiliation wicri:level="2"><nlm:affiliation>Department of Astronomy and Radio Astronomy Lab, University of California, Berkeley, CA, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Astronomy and Radio Astronomy Lab, University of California, Berkeley, CA</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Markoff, S" sort="Markoff, S" uniqKey="Markoff S" first="S" last="Markoff">S. Markoff</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Molenaar, G J" sort="Molenaar, G J" uniqKey="Molenaar G" first="G J" last="Molenaar">G J Molenaar</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands; Department of Physics and Electronics, Rhodes University, PO Box 94, Grahamstown 6140 South Africa.</nlm:affiliation><orgName type="university">Université d'Amsterdam</orgName><country>Pays-Bas</country><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Pietka, M" sort="Pietka, M" uniqKey="Pietka M" first="M" last="Pietka">M. Pietka</name><affiliation wicri:level="4"><nlm:affiliation>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Astrophysics, Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK; Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ</wicri:regionArea><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Scheers, L H A" sort="Scheers, L H A" uniqKey="Scheers L" first="L H A" last="Scheers">L H A. Scheers</name><affiliation wicri:level="4"><nlm:affiliation>Centrum Wiskunde and Informatica, Science Park 123, NL-1098 XG Amsterdam, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Centrum Wiskunde and Informatica, Science Park 123, NL-1098 XG Amsterdam, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Serylak, M" sort="Serylak, M" uniqKey="Serylak M" first="M" last="Serylak">M. Serylak</name><affiliation wicri:level="1"><nlm:affiliation>Department of Physics and Astronomy, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa; SKA South Africa, 3rd Floor, The Park, Park Road, Pinelands 7405, South Africa.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Department of Physics and Astronomy, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa; SKA South Africa, 3rd Floor, The Park, Park Road, Pinelands 7405</wicri:regionArea><wicri:noRegion>Pinelands 7405</wicri:noRegion></affiliation></author><author><name sortKey="Stappers, B W" sort="Stappers, B W" uniqKey="Stappers B" first="B W" last="Stappers">B W Stappers</name><affiliation wicri:level="4"><nlm:affiliation>Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL</wicri:regionArea><orgName type="university">Université de Manchester</orgName><placeName><settlement type="city">Manchester</settlement><region type="nation">Angleterre</region><region nuts="2" type="region">Grand Manchester</region></placeName></affiliation></author><author><name sortKey="Ter Veen, S" sort="Ter Veen, S" uniqKey="Ter Veen S" first="S" last="Ter Veen">S. Ter Veen</name><affiliation wicri:level="1"><nlm:affiliation>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo</wicri:regionArea><wicri:noRegion>NL-7990 AA Dwingeloo</wicri:noRegion></affiliation></author><author><name sortKey="Van Leeuwen, J" sort="Van Leeuwen, J" uniqKey="Van Leeuwen J" first="J" last="Van Leeuwen">J. Van Leeuwen</name><affiliation wicri:level="4"><nlm:affiliation>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Wijers, R A M J" sort="Wijers, R A M J" uniqKey="Wijers R" first="R A M J" last="Wijers">R A M J. Wijers</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Wijnands, R" sort="Wijnands, R" uniqKey="Wijnands R" first="R" last="Wijnands">R. Wijnands</name><affiliation wicri:level="4"><nlm:affiliation>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Wise, M W" sort="Wise, M W" uniqKey="Wise M" first="M W" last="Wise">M W Wise</name><affiliation wicri:level="4"><nlm:affiliation>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands.</nlm:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam</wicri:regionArea><orgName type="university">Université d'Amsterdam</orgName><placeName><settlement type="city">Amsterdam</settlement><region>Hollande-Septentrionale</region></placeName></affiliation></author><author><name sortKey="Zarka, P" sort="Zarka, P" uniqKey="Zarka P" first="P" last="Zarka">P. Zarka</name><affiliation wicri:level="1"><nlm:affiliation>LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen, F-92195 Meudon, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen, F-92195 Meudon, France; Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS/INSU, USR 704 - Univ. Orléans, OSUC, F-18330 Nançay</wicri:regionArea><wicri:noRegion>18330 Nançay</wicri:noRegion><wicri:noRegion>18330 Nançay</wicri:noRegion></affiliation></author></analytic><series><title level="j">Monthly notices of the Royal Astronomical Society</title><idno type="ISSN">0035-8711</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The eclipses of certain types of binary millisecond pulsars (i.e. 'black widows' and 'redbacks') are often studied using high-time-resolution, 'beamformed' radio observations. However, they may also be detected in images generated from interferometric data. As part of a larger imaging project to characterize the variable and transient sky at radio frequencies <200 MHz, we have blindly detected the redback system PSR J2215+5135 as a variable source of interest with the Low-Frequency Array (LOFAR). Using observations with cadences of two weeks - six months, we find preliminary evidence that the eclipse duration is frequency dependent (∝ν(-0.4)), such that the pulsar is eclipsed for longer at lower frequencies, in broad agreement with beamformed studies of other similar sources. Furthermore, the detection of the eclipses in imaging data suggests an eclipsing medium that absorbs the pulsed emission, rather than scattering it. Our study is also a demonstration of the prospects of finding pulsars in wide-field imaging surveys with the current generation of low-frequency radio telescopes.</div></front></TEI><affiliations><list><country><li>Afrique du Sud</li><li>Allemagne</li><li>Australie</li><li>France</li><li>Japon</li><li>Pays-Bas</li><li>Royaume-Uni</li><li>États-Unis</li></country><region><li>Angleterre</li><li>Californie</li><li>District de Columbia</li><li>Grand Manchester</li><li>Hollande-Septentrionale</li><li>New Jersey</li><li>Nouvelle-Galles du Sud</li><li>Oxfordshire</li><li>Région de Kantō</li></region><settlement><li>Amsterdam</li><li>Manchester</li><li>Oxford</li><li>Princeton (New Jersey)</li><li>Sydney</li><li>Tokyo</li></settlement><orgName><li>Université d'Amsterdam</li><li>Université d'Oxford</li><li>Université de Manchester</li><li>Université de Princeton</li><li>Université de Sydney</li></orgName></list><tree><country name="Pays-Bas"><region name="Angleterre"><name sortKey="Broderick, J W" sort="Broderick, J W" uniqKey="Broderick J" first="J W" last="Broderick">J W Broderick</name></region><name sortKey="Carbone, D" sort="Carbone, D" uniqKey="Carbone D" first="D" last="Carbone">D. Carbone</name><name sortKey="Cendes, Y" sort="Cendes, Y" uniqKey="Cendes Y" first="Y" last="Cendes">Y. Cendes</name><name sortKey="Falcke, H" sort="Falcke, H" uniqKey="Falcke H" first="H" last="Falcke">H. Falcke</name><name sortKey="Hessels, J W T" sort="Hessels, J W T" uniqKey="Hessels J" first="J W T" last="Hessels">J W T. Hessels</name><name sortKey="Jonker, P" sort="Jonker, P" uniqKey="Jonker P" first="P" last="Jonker">P. Jonker</name><name sortKey="Markoff, S" sort="Markoff, S" uniqKey="Markoff S" first="S" last="Markoff">S. Markoff</name><name sortKey="Molenaar, G J" sort="Molenaar, G J" uniqKey="Molenaar G" first="G J" last="Molenaar">G J Molenaar</name><name sortKey="Rowlinson, A" sort="Rowlinson, A" uniqKey="Rowlinson A" first="A" last="Rowlinson">A. Rowlinson</name><name sortKey="Scheers, L H A" sort="Scheers, L H A" uniqKey="Scheers L" first="L H A" last="Scheers">L H A. Scheers</name><name sortKey="Swinbank, J D" sort="Swinbank, J D" uniqKey="Swinbank J" first="J D" last="Swinbank">J D Swinbank</name><name sortKey="Ter Veen, S" sort="Ter Veen, S" uniqKey="Ter Veen S" first="S" last="Ter Veen">S. Ter Veen</name><name sortKey="Van Leeuwen, J" sort="Van Leeuwen, J" uniqKey="Van Leeuwen J" first="J" last="Van Leeuwen">J. Van Leeuwen</name><name sortKey="Wijers, R A M J" sort="Wijers, R A M J" uniqKey="Wijers R" first="R A M J" last="Wijers">R A M J. Wijers</name><name sortKey="Wijnands, R" sort="Wijnands, R" uniqKey="Wijnands R" first="R" last="Wijnands">R. Wijnands</name><name sortKey="Wise, M W" sort="Wise, M W" uniqKey="Wise M" first="M W" last="Wise">M W Wise</name></country><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Fender, R P" sort="Fender, R P" uniqKey="Fender R" first="R P" last="Fender">R P Fender</name></region><name sortKey="Breton, R P" sort="Breton, R P" uniqKey="Breton R" first="R P" last="Breton">R P Breton</name><name sortKey="Hassall, T E" sort="Hassall, T E" uniqKey="Hassall T" first="T E" last="Hassall">T E Hassall</name><name sortKey="Kramer, M" sort="Kramer, M" uniqKey="Kramer M" first="M" last="Kramer">M. Kramer</name><name sortKey="Pietka, M" sort="Pietka, M" uniqKey="Pietka M" first="M" last="Pietka">M. Pietka</name><name sortKey="Staley, T D" sort="Staley, T D" uniqKey="Staley T" first="T D" last="Staley">T D Staley</name><name sortKey="Stappers, B W" sort="Stappers, B W" uniqKey="Stappers B" first="B W" last="Stappers">B W Stappers</name><name sortKey="Stewart, A J" sort="Stewart, A J" uniqKey="Stewart A" first="A J" last="Stewart">A J Stewart</name></country><country name="États-Unis"><region name="District de Columbia"><name sortKey="Van Der Horst, A J" sort="Van Der Horst, A J" uniqKey="Van Der Horst A" first="A J" last="Van Der Horst">A J Van Der Horst</name></region><name sortKey="Law, C J" sort="Law, C J" uniqKey="Law C" first="C J" last="Law">C J Law</name></country><country name="Australie"><region name="Nouvelle-Galles du Sud"><name sortKey="Bell, M E" sort="Bell, M E" uniqKey="Bell M" first="M E" last="Bell">M E Bell</name></region></country><country name="France"><noRegion><name sortKey="Corbel, S" sort="Corbel, S" uniqKey="Corbel S" first="S" last="Corbel">S. Corbel</name></noRegion><name sortKey="Grie Meier, J M" sort="Grie Meier, J M" uniqKey="Grie Meier J" first="J-M" last="Grie Meier">J-M Grie Meier</name><name sortKey="Zarka, P" sort="Zarka, P" uniqKey="Zarka P" first="P" last="Zarka">P. Zarka</name></country><country name="Allemagne"><noRegion><name sortKey="Eisloffel, J" sort="Eisloffel, J" uniqKey="Eisloffel J" first="J" last="Eislöffel">J. Eislöffel</name></noRegion></country><country name="Japon"><region name="Région de Kantō"><name sortKey="Kuniyoshi, M" sort="Kuniyoshi, M" uniqKey="Kuniyoshi M" first="M" last="Kuniyoshi">M. Kuniyoshi</name></region></country><country name="Afrique du Sud"><noRegion><name sortKey="Serylak, M" sort="Serylak, M" uniqKey="Serylak M" first="M" last="Serylak">M. Serylak</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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