4.7 Article

A 0535+26: back in business

Journal

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 368, Issue 1, Pages 447-453

Publisher

OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2006.10127.x

Keywords

stars : neutron; X-rays : binaries

Funding

  1. Science and Technology Facilities Council [PP/D001013/1] Funding Source: researchfish
  2. STFC [PP/D001013/1] Funding Source: UKRI

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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.

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