Direct feeding of the black hole at the Galactic Centre with radial gas streams from close-in stellar winds

被引:42
作者
Loeb, A [1 ]
机构
[1] Harvard Univ, Dept Astron, Cambridge, MA 02138 USA
关键词
stars; winds; outflows; Galaxy : centre;
D O I
10.1111/j.1365-2966.2004.07684.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We show that the recently discovered orbits of massive stars with closest approach of similar to10(3) Schwarzschild radii from Sgr A* allow winds from these stars to provide the required mass deposition rate near the black hole horizon. The observed luminosity of Sgr A* does not require viscous transport of angular momentum, as long as the total wind mass loss rate reaches similar to10(-6) M-circle dot yr(-1) from the close-in stars. The specific orbits of the nearest stars should cause modulation of the radio and infrared flux from Sgr A* on a time-scale of years in a predictable fashion.
引用
收藏
页码:725 / 728
页数:4
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