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The bulk kinetic power of the jets of GRS 1915+105

被引：22
作者：
Gliozzi, M
Bodo, G
Ghisellini, G
机构：
[1] Dipartimento Fis Gen Torino, I-10125 Turin, Italy
[2] Osservatorio Astron Torino, I-10025 Pino Torinese, Italy
[3] Osservatorio Astron Brera, I-23807 Merate, Italy
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1999年 / 303卷 / 03期
关键词：
radiative mechanisms; non-thermal; stars : individual : GRS 1915+105;
D O I：
10.1046/j.1365-8711.1999.02436.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We calculate the minimum value of the power in kinetic bulk motion of the galactic superluminal source: GRS 1915+105. This value far exceeds the Eddington luminosity for accretion on to a black hole of mass 10 M.. This large value severely limits the possible carriers of the kinetic luminosity at the base of the jet, and favours a jet production and acceleration controlled by a magnetic field, the value of which, at the base of the jet, exceeds 10(8) G. The Blandford & Znajek process can be responsible for the extraction of the rotational energy of a Kerr black hole, if it lasts long enough to provide the required kinetic energy. The time required, of the order of a day, implies that the process must operate in a stationary, not impulsive, mode.
引用
收藏
页码：L37 / L40
页数：4
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