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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 | Affiliation: | School of Physics and Astronomy, Southampton University | Abstract: | We 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 | Services: | Forum | Review | PDF | Favorites |
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