Discovery of millisecond pulsars in radio searches of southern Fermi Large Area Telescope sources
Identifieur interne : 000871 ( Istex/Checkpoint ); précédent : 000870; suivant : 000872Discovery of millisecond pulsars in radio searches of southern Fermi Large Area Telescope sources
Auteurs : M. J. Keith [Australie, États-Unis, Niger] ; S. Johnston [Australie] ; P. S. Ray [États-Unis] ; E. C. Ferrara [États-Unis] ; P. M. Saz Parkinson [États-Unis] ; Ö. Çelik [États-Unis] ; A. Belfiore [États-Unis, Italie] ; D. Donato [États-Unis] ; C. C. Cheung [États-Unis, Niger] ; A. A. Abdo [États-Unis, Niger] ; F. Camilo [États-Unis] ; P. C. C. Freire [Allemagne] ; L. Guillemot [Allemagne] ; A. K. Harding [États-Unis] ; M. Kramer [Allemagne, Royaume-Uni] ; P. F. Michelson [États-Unis] ; S. M. Ransom [États-Unis] ; R. W. Romani [États-Unis] ; D. A. Smith [France] ; D. J. Thompson [États-Unis] ; P. Weltevrede [Royaume-Uni] ; K. S. Wood [États-Unis]Source :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2011-06-21.
English descriptors
- KwdEn :
- 1fgl, 1fgl catalogue, 1fgl sources, Abdo, Acceleration range, Arcmin, Australia telescope, Binary motion, Cent arcmin, Cent arcsec, Cent level, Centre, Circular polarization, Clock correction procedure, Cordes lazio, Count rate, Deep observations, Density limit, Diffuse emission components, Effective area, Electron density, Energetic pulsars, Energy bins, Energy loss, Energy range, Ephemeris, Excellent candidate, Fermi, Fermi satellite, Flux density, Galactic pulsar population, Gamma rays, Gammaray source, Gammaray source 1fgl, High precision timing experiments, Independent evidence, Instrument response functions, Istituto nazionale, Least digits, Likelihood ratio test, Linear polarization, Mass function, Millisecond pulsars, Minimum companion mass, Mnras, Monthly light curve, Monthly notices, Msps, Nasa goddard space flight center, Naval research laboratory, Orbital period, Other sources, Parkes, Parkes radio telescope, Period distribution, Periodicity searches, Phase binning, Photon, Photon index, Point sources, Polarization position angles, Proper motion, Pulsar, Pulsation, Pulse frequency, Pulse peak, Radio observations, Radio position, Radio pulsars, Radio pulsations, Radio searches, Radio timing, Rare objects, Region round, Right ascension, Rotation measure, Santa cruz, Spectral analysis, Spectral index, Spectral model, Spectral parameters, Spectral shapes, Spectrum radio source, Steady source, System ephemeris model, Thick line, Total intensity, Unassociated, Unassociated sources, Upper panel, Variability analysis.
- Teeft :
- 1fgl, 1fgl catalogue, 1fgl sources, Abdo, Acceleration range, Arcmin, Australia telescope, Binary motion, Cent arcmin, Cent arcsec, Cent level, Centre, Circular polarization, Clock correction procedure, Cordes lazio, Count rate, Deep observations, Density limit, Diffuse emission components, Effective area, Electron density, Energetic pulsars, Energy bins, Energy loss, Energy range, Ephemeris, Excellent candidate, Fermi, Fermi satellite, Flux density, Galactic pulsar population, Gamma rays, Gammaray source, Gammaray source 1fgl, High precision timing experiments, Independent evidence, Instrument response functions, Istituto nazionale, Least digits, Likelihood ratio test, Linear polarization, Mass function, Millisecond pulsars, Minimum companion mass, Mnras, Monthly light curve, Monthly notices, Msps, Nasa goddard space flight center, Naval research laboratory, Orbital period, Other sources, Parkes, Parkes radio telescope, Period distribution, Periodicity searches, Phase binning, Photon, Photon index, Point sources, Polarization position angles, Proper motion, Pulsar, Pulsation, Pulse frequency, Pulse peak, Radio observations, Radio position, Radio pulsars, Radio pulsations, Radio searches, Radio timing, Rare objects, Region round, Right ascension, Rotation measure, Santa cruz, Spectral analysis, Spectral index, Spectral model, Spectral parameters, Spectral shapes, Spectrum radio source, Steady source, System ephemeris model, Thick line, Total intensity, Unassociated, Unassociated sources, Upper panel, Variability analysis.
Abstract
Using the Parkes Radio Telescope, we have carried out deep observations of 11 unassociated gamma‐ray sources. Periodicity searches of these data have discovered two millisecond pulsars, PSR J1103−5403 (1FGL J1103.9−5355) and PSR J2241−5236 (1FGL J2241.9−5236), and a long‐period pulsar, PSR J1604−44 (1FGL J1604.7−4443). In addition, we searched for but did not detect any radio pulsations from six gamma‐ray pulsars discovered by the Fermi satellite to a level of ∼0.04 mJy (for pulsars with a 10 per cent duty cycle). The timing of the millisecond pulsar PSR J1103−5403 has shown that its position is 9 arcmin from the centroid of the gamma‐ray source. Since these observations were carried out, independent evidence has shown that 1FGL J1103.9−5355 is associated with the flat spectrum radio source PKS 1101−536. It appears certain that the pulsar is not associated with the gamma‐ray source, despite the seemingly low probability of a chance detection of a radio millisecond pulsar. We consider that PSR J1604−44 is a chance discovery of a weak, long‐period pulsar and is unlikely to be associated with 1FGL J1604.7−4443. PSR J2241−5236 has a spin period of 2.2 ms and orbits a very low mass companion with a 3.5‐h orbital period. The relatively high flux density and low dispersion measure of PSR J2241−5236 make it an excellent candidate for high precision timing experiments. The gamma rays of 1FGL J2241.9−5236 have a spectrum that is well modelled by a power law with an exponential cut‐off, and phase binning with the radio ephemeris results in a multipeaked gamma‐ray pulse profile. Observations with Chandra have identified a coincident X‐ray source within 0.1 arcsec of the position of the pulsar obtained by radio timing.
Url:
DOI: 10.1111/j.1365-2966.2011.18464.x
Affiliations:
- Allemagne, Australie, France, Italie, Niger, Royaume-Uni, États-Unis
- Angleterre, Californie, District de Cologne, District de Columbia, Grand Manchester, Maryland, Rhénanie-du-Nord-Westphalie, Virginie, État de New York
- Bonn, College Park (Maryland), Manchester, New York
- Université Columbia, Université de Manchester, Université du Maryland
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Kramer</name><affiliation wicri:level="3"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Max‐Planck‐Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn</wicri:regionArea><placeName><region type="land" nuts="1">Rhénanie-du-Nord-Westphalie</region><region type="district" nuts="2">District de Cologne</region><settlement type="city">Bonn</settlement></placeName></affiliation><affiliation wicri:level="4"><orgName type="university">Université de Manchester</orgName><country>Royaume-Uni</country><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="Michelson, P F" sort="Michelson, P F" uniqKey="Michelson P" first="P. F." last="Michelson">P. F. Michelson</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Ransom, S M" sort="Ransom, S M" uniqKey="Ransom S" first="S. M." last="Ransom">S. M. Ransom</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>National Radio Astronomy Observatory (NRAO), Charlottesville, VA 22903</wicri:regionArea><placeName><region type="state">Virginie</region></placeName></affiliation></author><author><name sortKey="Romani, R W" sort="Romani, R W" uniqKey="Romani R" first="R. W." last="Romani">R. W. Romani</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Smith, D A" sort="Smith, D A" uniqKey="Smith D" first="D. A." last="Smith">D. A. Smith</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>Centre d’Études Nucléaires de Bordeaux Gradignan, Université Bordeaux 1, CNRS/IN2p3, 33175 Gradignan</wicri:regionArea><wicri:noRegion>33175 Gradignan</wicri:noRegion><wicri:noRegion>33175 Gradignan</wicri:noRegion></affiliation></author><author><name sortKey="Thompson, D J" sort="Thompson, D J" uniqKey="Thompson D" first="D. J." last="Thompson">D. J. Thompson</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>NASA Goddard Space Flight Center, Greenbelt, MD 20771</wicri:regionArea><placeName><region type="state">Maryland</region></placeName></affiliation></author><author><name sortKey="Weltevrede, P" sort="Weltevrede, P" uniqKey="Weltevrede P" first="P." last="Weltevrede">P. Weltevrede</name><affiliation wicri:level="4"><orgName type="university">Université de Manchester</orgName><country>Royaume-Uni</country><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="Wood, K S" sort="Wood, K S" uniqKey="Wood K" first="K. S." last="Wood">K. S. Wood</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Space Science Division, Naval Research Laboratory, Washington, DC 20375</wicri:regionArea><placeName><region type="state">District de Columbia</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Monthly Notices of the Royal Astronomical Society</title><title level="j" type="alt">MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY</title><idno type="ISSN">0035-8711</idno><idno type="eISSN">1365-2966</idno><imprint><biblScope unit="vol">414</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="1292">1292</biblScope><biblScope unit="page" to="1300">1300</biblScope><biblScope unit="page-count">9</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2011-06-21">2011-06-21</date></imprint><idno type="ISSN">0035-8711</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0035-8711</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>1fgl</term><term>1fgl catalogue</term><term>1fgl sources</term><term>Abdo</term><term>Acceleration range</term><term>Arcmin</term><term>Australia telescope</term><term>Binary motion</term><term>Cent arcmin</term><term>Cent arcsec</term><term>Cent level</term><term>Centre</term><term>Circular polarization</term><term>Clock correction procedure</term><term>Cordes lazio</term><term>Count rate</term><term>Deep observations</term><term>Density limit</term><term>Diffuse emission components</term><term>Effective area</term><term>Electron density</term><term>Energetic pulsars</term><term>Energy bins</term><term>Energy loss</term><term>Energy range</term><term>Ephemeris</term><term>Excellent candidate</term><term>Fermi</term><term>Fermi satellite</term><term>Flux density</term><term>Galactic pulsar population</term><term>Gamma rays</term><term>Gammaray source</term><term>Gammaray source 1fgl</term><term>High precision timing experiments</term><term>Independent evidence</term><term>Instrument response functions</term><term>Istituto nazionale</term><term>Least digits</term><term>Likelihood ratio test</term><term>Linear polarization</term><term>Mass function</term><term>Millisecond pulsars</term><term>Minimum companion mass</term><term>Mnras</term><term>Monthly light curve</term><term>Monthly notices</term><term>Msps</term><term>Nasa goddard space flight center</term><term>Naval research laboratory</term><term>Orbital period</term><term>Other sources</term><term>Parkes</term><term>Parkes radio telescope</term><term>Period distribution</term><term>Periodicity searches</term><term>Phase binning</term><term>Photon</term><term>Photon index</term><term>Point sources</term><term>Polarization position angles</term><term>Proper motion</term><term>Pulsar</term><term>Pulsation</term><term>Pulse frequency</term><term>Pulse peak</term><term>Radio observations</term><term>Radio position</term><term>Radio pulsars</term><term>Radio pulsations</term><term>Radio searches</term><term>Radio timing</term><term>Rare objects</term><term>Region round</term><term>Right ascension</term><term>Rotation measure</term><term>Santa cruz</term><term>Spectral analysis</term><term>Spectral index</term><term>Spectral model</term><term>Spectral parameters</term><term>Spectral shapes</term><term>Spectrum radio source</term><term>Steady source</term><term>System ephemeris model</term><term>Thick line</term><term>Total intensity</term><term>Unassociated</term><term>Unassociated sources</term><term>Upper panel</term><term>Variability analysis</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>1fgl</term><term>1fgl catalogue</term><term>1fgl sources</term><term>Abdo</term><term>Acceleration range</term><term>Arcmin</term><term>Australia telescope</term><term>Binary motion</term><term>Cent arcmin</term><term>Cent arcsec</term><term>Cent level</term><term>Centre</term><term>Circular polarization</term><term>Clock correction procedure</term><term>Cordes lazio</term><term>Count rate</term><term>Deep observations</term><term>Density limit</term><term>Diffuse emission components</term><term>Effective area</term><term>Electron density</term><term>Energetic pulsars</term><term>Energy bins</term><term>Energy loss</term><term>Energy range</term><term>Ephemeris</term><term>Excellent candidate</term><term>Fermi</term><term>Fermi satellite</term><term>Flux density</term><term>Galactic pulsar population</term><term>Gamma rays</term><term>Gammaray source</term><term>Gammaray source 1fgl</term><term>High precision timing experiments</term><term>Independent evidence</term><term>Instrument response functions</term><term>Istituto nazionale</term><term>Least digits</term><term>Likelihood ratio test</term><term>Linear polarization</term><term>Mass function</term><term>Millisecond pulsars</term><term>Minimum companion mass</term><term>Mnras</term><term>Monthly light curve</term><term>Monthly notices</term><term>Msps</term><term>Nasa goddard space flight center</term><term>Naval research laboratory</term><term>Orbital period</term><term>Other sources</term><term>Parkes</term><term>Parkes radio telescope</term><term>Period distribution</term><term>Periodicity searches</term><term>Phase binning</term><term>Photon</term><term>Photon index</term><term>Point sources</term><term>Polarization position angles</term><term>Proper motion</term><term>Pulsar</term><term>Pulsation</term><term>Pulse frequency</term><term>Pulse peak</term><term>Radio observations</term><term>Radio position</term><term>Radio pulsars</term><term>Radio pulsations</term><term>Radio searches</term><term>Radio timing</term><term>Rare objects</term><term>Region round</term><term>Right ascension</term><term>Rotation measure</term><term>Santa cruz</term><term>Spectral analysis</term><term>Spectral index</term><term>Spectral model</term><term>Spectral parameters</term><term>Spectral shapes</term><term>Spectrum radio source</term><term>Steady source</term><term>System ephemeris model</term><term>Thick line</term><term>Total intensity</term><term>Unassociated</term><term>Unassociated sources</term><term>Upper panel</term><term>Variability analysis</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Using the Parkes Radio Telescope, we have carried out deep observations of 11 unassociated gamma‐ray sources. Periodicity searches of these data have discovered two millisecond pulsars, PSR J1103−5403 (1FGL J1103.9−5355) and PSR J2241−5236 (1FGL J2241.9−5236), and a long‐period pulsar, PSR J1604−44 (1FGL J1604.7−4443). In addition, we searched for but did not detect any radio pulsations from six gamma‐ray pulsars discovered by the Fermi satellite to a level of ∼0.04 mJy (for pulsars with a 10 per cent duty cycle). The timing of the millisecond pulsar PSR J1103−5403 has shown that its position is 9 arcmin from the centroid of the gamma‐ray source. Since these observations were carried out, independent evidence has shown that 1FGL J1103.9−5355 is associated with the flat spectrum radio source PKS 1101−536. It appears certain that the pulsar is not associated with the gamma‐ray source, despite the seemingly low probability of a chance detection of a radio millisecond pulsar. We consider that PSR J1604−44 is a chance discovery of a weak, long‐period pulsar and is unlikely to be associated with 1FGL J1604.7−4443. PSR J2241−5236 has a spin period of 2.2 ms and orbits a very low mass companion with a 3.5‐h orbital period. The relatively high flux density and low dispersion measure of PSR J2241−5236 make it an excellent candidate for high precision timing experiments. The gamma rays of 1FGL J2241.9−5236 have a spectrum that is well modelled by a power law with an exponential cut‐off, and phase binning with the radio ephemeris results in a multipeaked gamma‐ray pulse profile. Observations with Chandra have identified a coincident X‐ray source within 0.1 arcsec of the position of the pulsar obtained by radio timing.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Australie</li><li>France</li><li>Italie</li><li>Niger</li><li>Royaume-Uni</li><li>États-Unis</li></country><region><li>Angleterre</li><li>Californie</li><li>District de Cologne</li><li>District de Columbia</li><li>Grand Manchester</li><li>Maryland</li><li>Rhénanie-du-Nord-Westphalie</li><li>Virginie</li><li>État de New York</li></region><settlement><li>Bonn</li><li>College Park (Maryland)</li><li>Manchester</li><li>New York</li></settlement><orgName><li>Université Columbia</li><li>Université de Manchester</li><li>Université du Maryland</li></orgName></list><tree><country name="Australie"><noRegion><name sortKey="Keith, M J" sort="Keith, M J" uniqKey="Keith M" first="M. J." last="Keith">M. J. Keith</name></noRegion><name sortKey="Johnston, S" sort="Johnston, S" uniqKey="Johnston S" first="S." last="Johnston">S. Johnston</name></country><country name="États-Unis"><region name="District de Columbia"><name sortKey="Keith, M J" sort="Keith, M J" uniqKey="Keith M" first="M. J." last="Keith">M. J. Keith</name></region><name sortKey="Abdo, A A" sort="Abdo, A A" uniqKey="Abdo A" first="A. A." last="Abdo">A. A. Abdo</name><name sortKey="Abdo, A A" sort="Abdo, A A" uniqKey="Abdo A" first="A. A." last="Abdo">A. A. Abdo</name><name sortKey="Belfiore, A" sort="Belfiore, A" uniqKey="Belfiore A" first="A." last="Belfiore">A. Belfiore</name><name sortKey="Camilo, F" sort="Camilo, F" uniqKey="Camilo F" first="F." last="Camilo">F. Camilo</name><name sortKey="Celik, O" sort="Celik, O" uniqKey="Celik O" first="Ö." last="Çelik">Ö. Çelik</name><name sortKey="Celik, O" sort="Celik, O" uniqKey="Celik O" first="Ö." last="Çelik">Ö. Çelik</name><name sortKey="Celik, O" sort="Celik, O" uniqKey="Celik O" first="Ö." last="Çelik">Ö. Çelik</name><name sortKey="Cheung, C C" sort="Cheung, C C" uniqKey="Cheung C" first="C. C." last="Cheung">C. C. Cheung</name><name sortKey="Cheung, C C" sort="Cheung, C C" uniqKey="Cheung C" first="C. C." last="Cheung">C. C. Cheung</name><name sortKey="Donato, D" sort="Donato, D" uniqKey="Donato D" first="D." last="Donato">D. Donato</name><name sortKey="Donato, D" sort="Donato, D" uniqKey="Donato D" first="D." last="Donato">D. Donato</name><name sortKey="Ferrara, E C" sort="Ferrara, E C" uniqKey="Ferrara E" first="E. C." last="Ferrara">E. C. Ferrara</name><name sortKey="Harding, A K" sort="Harding, A K" uniqKey="Harding A" first="A. K." last="Harding">A. K. Harding</name><name sortKey="Michelson, P F" sort="Michelson, P F" uniqKey="Michelson P" first="P. F." last="Michelson">P. F. Michelson</name><name sortKey="Ransom, S M" sort="Ransom, S M" uniqKey="Ransom S" first="S. M." last="Ransom">S. M. Ransom</name><name sortKey="Ray, P S" sort="Ray, P S" uniqKey="Ray P" first="P. S." last="Ray">P. S. Ray</name><name sortKey="Romani, R W" sort="Romani, R W" uniqKey="Romani R" first="R. W." last="Romani">R. W. Romani</name><name sortKey="Saz Parkinson, P M" sort="Saz Parkinson, P M" uniqKey="Saz Parkinson P" first="P. M." last="Saz Parkinson">P. M. Saz Parkinson</name><name sortKey="Thompson, D J" sort="Thompson, D J" uniqKey="Thompson D" first="D. J." last="Thompson">D. J. Thompson</name><name sortKey="Wood, K S" sort="Wood, K S" uniqKey="Wood K" first="K. S." last="Wood">K. S. Wood</name></country><country name="Niger"><noRegion><name sortKey="Keith, M J" sort="Keith, M J" uniqKey="Keith M" first="M. J." last="Keith">M. J. Keith</name></noRegion><name sortKey="Abdo, A A" sort="Abdo, A A" uniqKey="Abdo A" first="A. A." last="Abdo">A. A. Abdo</name><name sortKey="Cheung, C C" sort="Cheung, C C" uniqKey="Cheung C" first="C. C." last="Cheung">C. C. Cheung</name></country><country name="Italie"><noRegion><name sortKey="Belfiore, A" sort="Belfiore, A" uniqKey="Belfiore A" first="A." last="Belfiore">A. Belfiore</name></noRegion><name sortKey="Belfiore, A" sort="Belfiore, A" uniqKey="Belfiore A" first="A." last="Belfiore">A. Belfiore</name></country><country name="Allemagne"><region name="Rhénanie-du-Nord-Westphalie"><name sortKey="Freire, P C C" sort="Freire, P C C" uniqKey="Freire P" first="P. C. C." last="Freire">P. C. C. Freire</name></region><name sortKey="Guillemot, L" sort="Guillemot, L" uniqKey="Guillemot L" first="L." last="Guillemot">L. Guillemot</name><name sortKey="Kramer, M" sort="Kramer, M" uniqKey="Kramer M" first="M." last="Kramer">M. Kramer</name></country><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Kramer, M" sort="Kramer, M" uniqKey="Kramer M" first="M." last="Kramer">M. Kramer</name></region><name sortKey="Weltevrede, P" sort="Weltevrede, P" uniqKey="Weltevrede P" first="P." last="Weltevrede">P. Weltevrede</name></country><country name="France"><noRegion><name sortKey="Smith, D A" sort="Smith, D A" uniqKey="Smith D" first="D. A." last="Smith">D. A. Smith</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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