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Periodical Instabilities in the Blackhole Candidate GX339–4 Accretion Disk

Published online by Cambridge University Press:  12 April 2016

Philippe Durouchoux
Philippe Durouchoux*
Affiliation:
Service d’Astrophysique, C.E. Saclay, 91191 Gif sur Yvette Cedex, FRANCE

Abstract

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GX339-4, a black hole candidate, has been monitored since more than 30 years by X and gamma-ray spectrometers on board a dozen of satellites. One of the main characteristics of this source is its bimodal behaviour (high and low states). These states, apparently driven by accretion of matter from a companion onto a compact object, appear to be periodic, with a 14.5 month repetitivity, and an approximative 4 month duration. We discuss, in this paper, on periodic instabilities in the accretion disk surrounding GX339–4 to explain this bimodal behaviour.

Type
Part 15. Poster Papers
Information
International Astronomical Union Colloquium , Volume 163: Accretion Phenomena and Related Outflows , 1997 , pp. 699
Copyright
Copyright © Astronomical Society of the Pacific 1997