Comptonisation and time-lags in multi-temperature plasmas surrounding compact objects

Details Comptonisation and time-lags in multi-temperature plasmas surrounding compact objects Comptonisation and time-lags in multi-temperature plasmas surrounding compact objects

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000pasa...17...48c&link_type=abstract

Publications Astronomical Society of Australia, vol. 17, no. 1, p. 48-55

Astronomy and Astrophysics

Astronomy

Black Holes, X-Rays, Gamma-Rays, Accretion

Scientific paper

This paper investigates a recent model proposed by Moskalenko, Collmar & Schonfelder (1998) for the plasma surrounding galactic black hole candidates. Using a linear Monte Carlo code, the spectral and temporal behaviour of the model is found for the case where the plasma geometry consists of a hot shell surrounding a cooler spherical core. The spectrum produced by this model at X-ray and gamma-ray energies is obtained numerically. Also found for the first time in this geometry are the photon time-lags between two energy bands due to rapid aperiodic variability. It is argued that the time-lag information may be able to determine whether this particular geometry is a realistic model for the material surrounding galactic black hole candidates.

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