Modes of Accretion in X-ray Sources

Details Modes of Accretion in X-ray Sources Modes of Accretion in X-ray Sources

2002-03-05

arxiv.org/abs/astro-ph/0203064v1

Astronomy and Astrophysics

Astrophysics

16 pages, invited talk at "Current High-Energy Emission around Black Holes", 2nd KIAS Astrophysics Workshop, Seoul, 3-7 Septem

Scientific paper

Three classical modes of accretion are briefly discussed: wind-fed, spherical, and disk. The three modes are illustrated with the mass transfer onto black holes in high-mass X-ray binaries. Then a new regime of mini-disk accretion is described and it is argued that observed wind-fed X-ray sources are likely to accrete in this regime. Switching from one accretion mode to another can cause the observed spectral state transitio ns.

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