Journal Article

A 0535+26: back in business

M. J. Coe, P. Reig, V. A. McBride, J. L. Galache and J. Fabregat

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 368, issue 1, pages 447-453
Published in print May 2006 | ISSN: 0035-8711
Published online March 2006 | e-ISSN: 1365-2966 | DOI:
A 0535+26: back in business

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In 2005 May/June, after 10 yr of inactivity, the Be/X-ray binary system A 0535+26 underwent a major X-ray outburst. In this paper, data are presented from 10 yr of optical, infrared and X-ray monitoring showing the behaviour of the system during the quiescent epoch and the lead up to the new outburst. The results show the system going through a period when the Be star in the system had a minimal circumstellar disc and then a dramatic disc recovery leading, presumably, to the latest flare up of X-ray emission. The data are interpreted in terms of the state of the disc and its interaction with the neutron star companion.

Keywords: stars: neutron; X-rays: binaries

Journal Article.  4777 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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