A magnetic reconnection model for quasi-periodic oscillations in black hole systems

作     者：Chang-Yin Huang Ding-Xiong Wang Jiu-Zhou Wang Zhi-Yun Wang 

作者机构：School of Physics Huazhong University of Science and Technology School of Mathematics and Statistics Huazhong University of Science and Technology School of Physics and Electronic Engineering Hubei University of Arts and Science 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2013年第13卷第6期

页      面：705-718页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 11173011, 11143001, 11103003 and 11045004) the National Basic Research Program of China (973 program, 2009CB824800) the Fundamental Research Funds for the Central Universities (HUST: 2011TS159) 

主　　题：accretion, accretion disks -- black hole physics -- magnetic fields --stars individual (XTE J1859+226, XTE J1650-500, GRS 1915+105) -- galaxies:individual (NGC 5408, RE J1034+396) 

摘      要：The quasi-periodic oscillations （QPOs） in black hole （BH） systems with different scales are interpreted based on the magnetic reconnection of large-scale mag- netic fields generated by toroidal electric currents flowing in the inner region of the accretion disk, where the current density is assumed to be proportional to the mass density of the accreting plasma. The magnetic connection （MC） is taken into account in resolving dynamic equations describing the accretion disk, in which the MC be- tween the inner and outer disk regions, between the plunging region and the disk, and between the BH horizon and the disk are involved. It turns out that a single QPO frequency associated with several BH systems with different scales can be fitted by in- voking the magnetic reconnection due to the MC between the inner and outer regions of the disk, including the BH binaries XTE J1859＋226, XTE J1650-500 and GRS 1915＋105 and the massive BHs in NGC 5408 X-1 and RE J1034＋396. In addition, the X-ray spectra corresponding to the QPOs for these sources are fitted based on the typical disk-corona model.