The light curve of the companion to PSR B1957+20

Show simple item record Reynolds, Mark T. Callanan, Paul J. Fruchter, Andrew S. Torres, M. A. P. Beer, M. E. Gibbons, R. A. 2017-11-07T09:38:57Z 2017-11-07T09:38:57Z 2007
dc.identifier.citation Reynolds, 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.x en
dc.identifier.volume 379
dc.identifier.issued 3
dc.identifier.startpage 1117
dc.identifier.endpage 1122
dc.identifier.issn 0035-8711
dc.identifier.doi 10.1111/j.1365-2966.2007.11991.x
dc.description.abstract We 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.sponsorship National Aeronautics and Space Administration ( LTSA programme, NAG5-10889)
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Oxford University Press en
dc.rights © 2007, the Authors. Journal compilation © 2007, RAS en
dc.subject Binaries en
dc.subject Eclipsing en
dc.subject Stars en
dc.subject Low mass en
dc.subject Brown dwarfs en
dc.subject Neutron en
dc.subject Pulsars en
dc.subject Individual en
dc.subject PSR B1957+20 en
dc.title The light curve of the companion to PSR B1957+20 en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Mark Reynolds, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder Science Foundation Ireland
dc.contributor.funder National Aeronautics and Space Administration
dc.description.status Peer reviewed en
dc.identifier.journaltitle Monthly Notices of the Royal Astronomical Society en
dc.internal.IRISemailaddress en

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