AustralieFrV1, Main, Exploration, bibRecord, 007A92

A PRECISE MASS MEASUREMENT OF THE INTERMEDIATE-MASS BINARY PULSAR PSR J1802-2124

Identifieur interne : 007A92 ( Main/Exploration ); précédent : 007A91; suivant : 007A93

A PRECISE MASS MEASUREMENT OF THE INTERMEDIATE-MASS BINARY PULSAR PSR J1802-2124

Auteurs : R. D. Ferdman [France, Canada] ; I. H. Stairs [Canada, Australie] ; M. Kramer [Allemagne, Royaume-Uni] ; M. A. Mclaughlin [États-Unis] ; D. R. Lorimer [États-Unis] ; D. J. Nice [États-Unis] ; R. N. Manchester [Australie] ; G. Hobbs [Australie] ; A. G. Lyne [Royaume-Uni] ; F. Camilo [États-Unis] ; A. Possenti [Italie] ; P. B. Demorest [États-Unis] ; I. Cognard [France] ; G. Desvignes [France] ; G. Theureau [France] ; A. Faulkner [Royaume-Uni] ; D. C. Backer [États-Unis]

Source :

The Astrophysical journal [ 0004-637X ] ; 2010.

RBID : Pascal:11-0003723

Descripteurs français

Pascal (Inist)
- Mesure masse, Pulsar, Orbite, Naine blanche, Timing, Effet sélection, Evolution stellaire.

English descriptors

KwdEn :
- Mass measurement, Orbits, Pulsars, Selection effect, Stellar evolution, Timing, White dwarf stars.

Abstract

PSR J1802-2124 is a 12.6 ms pulsar in a 16.8 hr binary orbit with a relatively massive white dwarf (WD) companion. These properties make it a member of the intermediate-mass class of binary pulsar (IMBP) systems. We have been timing this pulsar since its discovery in 2002. Concentrated observations at the Green Bank Telescope, augmented with data from the Parkes and Nançay observatories, have allowed us to determine the general relativistic Shapiro delay. This has yielded pulsar and WD mass measurements of 1.24 ± 0.1 M_◦. and 0.78 ± 0.04 M_◦. (68% confidence), respectively. The low mass of the pulsar, the high mass of the WD companion, the short orbital period, and the pulsar spin period may be explained by the system having gone through a common-envelope phase in its evolution. We argue that selection effects may contribute to the relatively small number of known IMBPs.

Affiliations:

Links toward previous steps (curation, corpus...)

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Le document en format XML

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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">A PRECISE MASS MEASUREMENT OF THE INTERMEDIATE-MASS BINARY PULSAR PSR J1802-2124</title>
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<author><name sortKey="Faulkner, A" sort="Faulkner, A" uniqKey="Faulkner A" first="A." last="Faulkner">A. Faulkner</name>
<affiliation wicri:level="4"><inist:fA14 i1="07"><s1>Jodrell Bank Centre for Astrophysics, University of Manchester, Alan Turing Building, Oxford Road</s1>
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</placeName>
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<country>États-Unis</country>
<wicri:noRegion>Berkeley, CA 94720</wicri:noRegion>
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</analytic>
<series><title level="j" type="main">The Astrophysical journal</title>
<title level="j" type="abbreviated">Astrophys. j.</title>
<idno type="ISSN">0004-637X</idno>
<imprint><date when="2010">2010</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">The Astrophysical journal</title>
<title level="j" type="abbreviated">Astrophys. j.</title>
<idno type="ISSN">0004-637X</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Mass measurement</term>
<term>Orbits</term>
<term>Pulsars</term>
<term>Selection effect</term>
<term>Stellar evolution</term>
<term>Timing</term>
<term>White dwarf stars</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Mesure masse</term>
<term>Pulsar</term>
<term>Orbite</term>
<term>Naine blanche</term>
<term>Timing</term>
<term>Effet sélection</term>
<term>Evolution stellaire</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">PSR J1802-2124 is a 12.6 ms pulsar in a 16.8 hr binary orbit with a relatively massive white dwarf (WD) companion. These properties make it a member of the intermediate-mass class of binary pulsar (IMBP) systems. We have been timing this pulsar since its discovery in 2002. Concentrated observations at the Green Bank Telescope, augmented with data from the Parkes and Nançay observatories, have allowed us to determine the general relativistic Shapiro delay. This has yielded pulsar and WD mass measurements of 1.24 ± 0.1 M<sub>◦.</sub>
 and 0.78 ± 0.04 M<sub>◦.</sub>
 (68% confidence), respectively. The low mass of the pulsar, the high mass of the WD companion, the short orbital period, and the pulsar spin period may be explained by the system having gone through a common-envelope phase in its evolution. We argue that selection effects may contribute to the relatively small number of known IMBPs.</div>
</front>
</TEI>
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<li>États-Unis</li>
</country>
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<li>District de Cologne</li>
<li>Grand Manchester</li>
<li>Rhénanie-du-Nord-Westphalie</li>
<li>État de New York</li>
</region>
<settlement><li>Bonn</li>
<li>Manchester</li>
<li>New York</li>
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</country>
<country name="Allemagne"><region name="Rhénanie-du-Nord-Westphalie"><name sortKey="Kramer, M" sort="Kramer, M" uniqKey="Kramer M" first="M." last="Kramer">M. Kramer</name>
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<country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Kramer, M" sort="Kramer, M" uniqKey="Kramer M" first="M." last="Kramer">M. Kramer</name>
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A PRECISE MASS MEASUREMENT OF THE INTERMEDIATE-MASS BINARY PULSAR PSR J1802-2124

A PRECISE MASS MEASUREMENT OF THE INTERMEDIATE-MASS BINARY PULSAR PSR J1802-2124

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