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28 March 2024
 
  » arxiv » astro-ph/0401537

 Article overview


A major outburst from the X-ray binary RX J0520.5-6932
W. R. T. Edge ; M. J. Coe ; J. L. Galache ; A. B. Hill ;
Date 26 Dec 2003
Journal Mon.Not.Roy.Astron.Soc. 349 (2004) 1361
Subject astro-ph
AffiliationSchool of Physics and Astronomy, Southampton University
AbstractWe report on the analysis of 8 years of MAssive Compact Halo Objects (MACHO) data for the source RX J0520.5-6932. A regular period of 24.4 days has been confirmed, however this is manifest almost entirely in the red part of the spectrum. A major outburst, lasting approximately 200 days, was observed which increased the apparent brightness of the object by approximately 0.15 magnitudes without significantly altering its V-R colour index. This outburst was also seen in X-ray data. The evidence from this analysis points to the identification of this object as a Be/X-ray binary with a periodically variable circumstellar disk and a very early optical counterpart.
Source arXiv, astro-ph/0401537
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