A magnetic model for low/hard state of black hole binaries  

作　　者：Yong-Chun Ye Ding-Xiong Wang Chang-Yin Huang Xiao-Feng Cao 

机构地区：[1]School of Physics, Huazhong University of Science and Technology [2]School of Physics and Optoelectronic Engineering, Yangtze University [3]School of Physics and Electronic Information, Hubei University of Education

出　　处：《Research in Astronomy and Astrophysics》2016年第3期33-42,共10页天文和天体物理学研究（英文版）

基　　金：supported by the National Basic Research Program of China (973 program, 2009CB824800);the National Natural Science Foundation of China (Grant Nos. 11173011 and 11403003)

摘　　要：A magnetic model for the low/hard state （LHS） of two black hole X-ray binaries （BHXBs）, H1743-322 and GX 339-4, is proposed based on transport of the magnetic field from a companion into an accretion disk around a black hole （BH）. This model consists of a truncated thin disk with an inner advection-dominated accretion flow （ADAF）. The spectral profiles of the sources are fitted in agreement with the data observed at four different dates corresponding to the rising phase of the LHS. In addition, the association of the LHS with a quasi-steady jet is modeled based on transport of magnetic field, where the Blandford-Znajek （BZ） and Blandford-Payne （BP） processes are invoked to drive the jets from BH and inner ADAE It turns out that the steep radio/X-ray correlations observed in H 1743-322 and GX 339-4 can be interpreted based on our model.A magnetic model for the low/hard state （LHS） of two black hole X-ray binaries （BHXBs）, H1743-322 and GX 339-4, is proposed based on transport of the magnetic field from a companion into an accretion disk around a black hole （BH）. This model consists of a truncated thin disk with an inner advection-dominated accretion flow （ADAF）. The spectral profiles of the sources are fitted in agreement with the data observed at four different dates corresponding to the rising phase of the LHS. In addition, the association of the LHS with a quasi-steady jet is modeled based on transport of magnetic field, where the Blandford-Znajek （BZ） and Blandford-Payne （BP） processes are invoked to drive the jets from BH and inner ADAE It turns out that the steep radio/X-ray correlations observed in H 1743-322 and GX 339-4 can be interpreted based on our model.

关 键 词：ACCRETION accretion disks -- black hole physics -- magnetic field-- stars： individual （H 1743- 322） -- stars： individual （GX 339-4） 

分 类 号：P145.8[天文地球—天体物理] O481.4[天文地球—天文学]