A disk-corona model for the low/hard state of black hole X-ray binaries

被引：1

作者：

Wang, Jiu-Zhou ^{[1
]}

Wang, Ding-Xiong ^{[1
]}

Huang, Chang-Yin ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China

来源：

RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2013年 / 13卷 / 10期

基金：

中国国家自然科学基金;

关键词：

accretion; accretion disks; black hole physics; magnetic field; jet power; MAGNETICALLY DRIVEN ACCRETION; JET POWER; DOMINATED ACCRETION; HARD; TRANSITIONS; FLOWS; LUMINOSITY; ADVECTION; FANAROFF; BEHAVIOR;

D O I：

10.1088/1674-4527/13/10/003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A disk-corona model for fitting the low/hard (LH) state of the associated steady jet in black hole X-ray binaries (BHXBs) is proposed based on the large-scale magnetic field configuration that arises from the coexistence of the Blandford-Znajek (BZ) and Blandford-Payne (BP) processes, where the magnetic field configuration for the BP process is determined by the requirement of energy conversion from Poynting energy flux into kinetic energy flux in the jet. It is found that corona current is crucial to guarantee the consistency of the jet launching from the accretion disk. The relative importance of the BZ and BP processes in powering jets from black hole accretion disks is discussed, and the LH state of several BHXBs is fitted based on our model. In addition, we suggest that magnetic field configuration can be regarded as the second parameter for governing the state transition of BHXBs.

引用

页码：1163 / 1180

页数：18

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