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The decline and fall of GRS 1915+105 : the end is nigh?

Truss, M. R. and Done, C. (2006) 'The decline and fall of GRS 1915+105 : the end is nigh?', Monthly notices of the Royal Astronomical Society: letters., 368 (1). L25-L29.


The Galactic microquasar GRS 1915+105 has been in a continuous state of outburst since 1992, over 20 times longer than any other black hole X-ray transient. Assuming that the outburst is powered via accretion of an irradiated gaseous disc, we calculate how the predicted outburst duration varies according to the efficiency of the self-irradiation mechanism. At least one current model leads to the conclusion that the end of the outburst is imminent. The timing of the decline of GRS 1915+105, whenever it arrives, will be an excellent discriminator of the self-irradiation mechanism in X-ray transients, allowing us to infer the fraction of the disc that is heated by the incident X-rays and the magnitude of the mass loss rate in the form of a wind.

Item Type:Article
Keywords:Accretion, Accretion discs, Binaries, Stars.
Full text:(NA) Not Applicable
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Publisher statement:This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society: Letters ©: 2006 The Authors. Journal compilation © 2006 RAS Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Record Created:02 May 2008
Last Modified:04 Nov 2015 11:25

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