Observational properties of accretion discs: Precessing and warped?

Details Observational properties of accretion discs: Precessing and warped? Observational properties of accretion discs: Precessing and warped?

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008newar..51..768c&link_type=abstract

New Astronomy Reviews, Volume 51, Issue 10-12, p. 768-774.

Astronomy and Astrophysics

Astronomy

7

X-Ray Binaries, Accretion And Accretion Disks, Neutron Stars, Black Holes

Scientific paper

Over the last 40 years, X-ray astronomy missions have revealed long-term, superorbital periods in a variety of X-ray binaries. These modulations can provide significant constraints on the physical properties of accretion discs. Some of these modulations are Her X-1-like and are interpreted as irradiation-driven, tilted, precessing accretion discs. Others show more complex light curves, with the period changing on timescales >1000 d, and are interpreted in terms of the Ogilvie and Dubus [Ogilvie, G.I., Dubus, G., 2001, MNRAS 320, 485 (OD01)] disc stability criteria. We suggest a categorisation of superorbital periods into six different types, based on their observed characteristics.

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