ACCRETION DISK WARPING BY RESONANT RELAXATION: THE CASE OF MASER DISK NGC 4258

被引：14

作者：

Bregman, Michal ^{[1
]}

Alexander, Tal ^{[1
]}

机构：

[1] Weizmann Inst Sci, Fac Phys, IL-76100 Rehovot, Israel

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2009年 / 700卷 / 02期

基金：

欧洲研究理事会; 芬兰科学院;

关键词：

accretion; accretion disks; galaxies: individual (NGC 4258); galaxies: nuclei; masers; stellar dynamics; MASSIVE BLACK-HOLE; ACTIVE GALACTIC NUCLEI; NGC-4258; GALAXIES; EVOLUTION; PARSEC; PRECESSION; DYNAMICS; QUASARS; GRAVITY;

D O I：

10.1088/0004-637X/700/2/L192

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The maser disk around the massive black hole (MBH) in active galaxy NGC 4258 exhibits an O(10 degrees) warp on the O(0.1 pc) scale. The physics driving the warp is still debated. Suggested mechanisms include torquing by relativistic frame dragging or by radiation pressure. We propose here a new warping mechanism: resonant torquing of the disk by stars in the dense cusp around the MBH. We show that resonant torquing can induce such a warp over a wide range of observed and deduced physical parameters of the maser disk.

引用

页码：L192 / L195

页数：4

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