Relativistically smeared X-ray reprocessed components in the GINGA spectra of GS 2023+338

Details Relativistically smeared X-ray reprocessed components in the GINGA spectra of GS 2023+338 Relativistically smeared X-ray reprocessed components in the GINGA spectra of GS 2023+338

1997-08-13

arxiv.org/abs/astro-ph/9708124v1

Astronomy and Astrophysics

Astrophysics

11 pages including one figure and two tables, uses aaspp4.sty. Accepted for publication in ApJ Letters

Scientific paper

10.1086/310933

We present results of spectral analysis of Ginga data obtained during the decline phase after the 1989 outburst of GS 2023+338 (V404 Cyg). Our analysis includes detailed modelling of the effects of X-ray reflection/reprocessing. We have found that (1) the contribution of the reprocessed component (both continuum and line) corresponds to the solid angle of the reprocessor as seen from the X-ray source of Omega \approx (0.4-0.5) 2\pi, (2) the reprocessed component (both line and continuum) is broadened (``smeared'') by kinematic and relativistic effects, as expected from the accretion disk reflection. We discuss the constraints these results give on various possible system geometries.

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