摘要
在Blandford-Znajek(BZ)过程和非轴对称磁场的磁耦合(MC)过程共存模型的基础上解释了黑洞双星XTE J1550-564令人困惑的高频准周期振荡(HFQPO)的3∶2∶1频率比.结果表明:高频准周期振荡中的两个频率可以用MC过程导致的两个旋转热斑来拟合,另外一个高频准周期振荡频率与BZ过程产生的磁热斑有关.进一步地,讨论了与黑洞双星XTEJ1550-564高频准周期振荡、喷流以及态转变相关的天体物理环境.
Based on a toy model of coexistence of the Blandford-Znajek（BZ） and magnetic coupling（MC） processes with a non-axisymmetric magnetic field,we explain a puzzling 3∶2∶1 ratio of the high-frequency Quasi-Periodic Oscillation（HFQPO） in XTE J1550-564.It turns out that two frequencies of the HFQPO can be fitted by two rotating magnetic hotspots arising from the MC process,and the other HFQPO frequency is related to a magnetic hotspot produced in the BZ process.Furthermore,we discuss the astrophysical environment based on the correlation between HFQPOs,jet and state transition in XTE J1550-564.
出处
《中南民族大学学报（自然科学版）》
CAS
2010年第3期46-52,共7页
Journal of South-Central University for Nationalities：Natural Science Edition
基金
国家自然科学基金资助项目(10873005)
关键词
吸积
吸积盘
黑洞物理
X射线双星
磁场
不稳定性
振荡
accretion
accretion discs
black hole physics
X-rays： stars
magnetic field
instabilities
oscillation
