Doppler tomography of relativistic accretion disks

被引：6
作者：
Karas, V
Kraus, P
机构：
[1] SCUOLA INT SUPER STUDI AVANZATI, TRIESTE, ITALY
[2] GOTHENBURG UNIV, DEPT ASTRON & ASTROPHYS, GOTHENBURG, SWEDEN
[3] CHALMERS UNIV TECHNOL, S-41296 GOTHENBURG, SWEDEN
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 1996年 / 48卷 / 05期
关键词：
accretion; accretion disks; black hole physics; galaxies; active; X-rays;
D O I：
10.1093/pasj/48.5.771
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Spectral lines from a source orbiting around a compact object are studied. Time variations of observed frequency and count rate due to motion of the source and gravitational lensing are considered. Gravitational. field of the central object is described by the Kerr metric. It is shown that: (i) simultaneous temporal and frequency resolution enables us to restrict parameters bf the model (inclination angle, position of the source, angular momentum;of the black hole); (ii) techniques of image restoration, familiar from other fields of astronomy, can be applied to study inner regions of active galactic nuclei. This contribution is relevant for extremely variable X-ray sources with high parameter of efficiency, such as Seyfert 1 galaxy PHL 1092 observed by ROSAT.
引用
收藏
页码：771 / 775
页数：5
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