A Comptonization Model for Phase Lag Variability in GRS 1915+105

Details A Comptonization Model for Phase Lag Variability in GRS 1915+105 A Comptonization Model for Phase Lag Variability in GRS 1915+105

2000-06-07

arxiv.org/abs/astro-ph/0006091v1

Astrophys.Space Sci. 276 (2001) 217-220

Astronomy and Astrophysics

Astrophysics

6 pages Latex with 2 ps figures. Accepted for publication in ApJ Letters

Scientific paper

10.1086/312810

In this Letter we propose a simple thermal comptonization model to account for the observed properties of the phase lags associated to the ``plateau'' intervals of GRS 1915+105. By invoking a temperature stratification in a corona and assuming that the optical depth of the comptonizing region increases as the disk inner radius moves inward, we are able to reproduce both the observed colors and time lags in the continuum.

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