The light curve of the companion to PSR B1957+20

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dc.contributor.authorReynolds, Mark T.
dc.contributor.authorCallanan, Paul J.
dc.contributor.authorFruchter, Andrew S.
dc.contributor.authorTorres, M. A. P.
dc.contributor.authorBeer, M. E.
dc.contributor.authorGibbons, R. A.
dc.contributor.funderScience Foundation Ireland
dc.contributor.funderNational Aeronautics and Space Administration
dc.date.accessioned2017-11-07T09:38:57Z
dc.date.available2017-11-07T09:38:57Z
dc.date.issued2007
dc.description.abstractWe present a new analysis of the light curve for the secondary star in the eclipsing binary millisecond pulsar system PSR B1957+20. Combining previous data and new data points at minimum from the Hubble Space Telescope, we have 100 per cent coverage in the R-band. We also have a number of new K-s-band data points, which we use to constrain the infrared magnitude of the system. We model this with the eclipsing light-curve (ELC) code. From the modelling with the ELC code we obtain colour information about the secondary at minimum light in BVRI and K. For our best-fitting model we are able to constrain the system inclination to 65 degrees +/- 2 degrees for pulsar masses ranging from 1.3 to 1.9 M-circle dot. The pulsar mass is unconstrained. We also find that the secondary star is not filling its Roche lobe. The temperature of the unirradiated side of the companion is in agreement with previous estimates and we find that the observed temperature gradient across the secondary star is physically sustainable.en
dc.description.sponsorshipNational Aeronautics and Space Administration ( LTSA programme, NAG5-10889)
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationReynolds, M. T., Callanan, P. J., Fruchter, A. S., Torres, M. A. P., Beer, M. E. and Gibbons, R. A. (2007) 'The light curve of the companion to PSR B1957+20', Monthly Notices of the Royal Astronomical Society, 379(3), pp. 1117-1122. doi: 10.1111/j.1365-2966.2007.11991.xen
dc.identifier.doi10.1111/j.1365-2966.2007.11991.x
dc.identifier.endpage1122
dc.identifier.issn0035-8711
dc.identifier.issued3
dc.identifier.journaltitleMonthly Notices of the Royal Astronomical Societyen
dc.identifier.startpage1117
dc.identifier.urihttps://hdl.handle.net/10468/4980
dc.identifier.volume379
dc.language.isoenen
dc.publisherOxford University Pressen
dc.relation.urihttps://academic.oup.com/mnras/article-lookup/doi/10.1111/j.1365-2966.2007.11991.x
dc.rights© 2007, the Authors. Journal compilation © 2007, RASen
dc.subjectBinariesen
dc.subjectEclipsingen
dc.subjectStarsen
dc.subjectLow massen
dc.subjectBrown dwarfsen
dc.subjectNeutronen
dc.subjectPulsarsen
dc.subjectIndividualen
dc.subjectPSR B1957+20en
dc.titleThe light curve of the companion to PSR B1957+20en
dc.typeArticle (peer-reviewed)en
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