Model radiation spectrum for an accretion disk near a rotating black hole

被引：28

作者：

Zakharov, AF ^{[1
]}

Repin, SV

机构：

[1] Inst Theoret & Expt Phys, Moscow, Russia

[2] Russian Acad Sci, Space Res Inst, Moscow 117810, Russia

来源：

ASTRONOMY REPORTS | 2002年 / 46卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.1479423

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

ASCA, RXTE, and Chandra observations of Seyfert galaxies indicate the presence in their spectra of broad emission lines with characteristic double-peaked profiles, which could arise in the Inner regions of an accretion disk. In such regions, general relativistic effects must be taken into account, and may even dominate. In connection with this, we have constructed the radiation spectrum for an individual spectral line for a model isothermal Kerr accretion disk. This demonstrates the manifestation of general relativistic effects in pure form, unclouded by effects associated with models for the structure of the disk itself. It is assumed that matter in the disk moves in circular geodesics in the equatorial plane. The spectrum retains a characteristic two-peaked profile for wide ranges of values of the radial coordinate of the radiating region, angular momentum of the black hole, and viewing angle. The inner regions of the disk make an appreciable contribution to the red wing of the spectrum, (C) 2002 MAIK "Nauka/Interperiodica".

引用

页码：360 / 365

页数：6