基于宇宙电池的黑洞双星3:2 HFQPO对模型
A model for 3:2 HFQPO pairs in black hole binaries based on cosmic battery
摘要:
利用旋转黑洞与相对论吸积盘之间的磁联系(MC)的周转共振,提出了一个在4个黑洞X射线双星(BHXB)中观测到的3:2高频准周期振荡(HFQPO)模型.结果表明,由于Poynting-Robertson宇宙电池(PRCB),MC可以计算,并与陡峭的幂律态相关的3:2 HFQPO对可以在这个模型中拟合。此外,周转共振模型中的严重阻尼问题可以通过MC过程将能量从BH转移到内盘来克服,以发射具有足够振幅和相干性的X射线来产生HFQPO。此外,我们还讨论了磁场在BHXB态跃迁中的重要作用。
英文摘要:
A model for 3:2 high-frequency quasi-periodic oscillations (HFQPOs) with 3:2 pairs observed in four black hole X-ray binaries (BHXBs) is proposed by invoking the epicyclic resonances with the magnetic connection (MC) between a spinning black hole (BH) with a relativistic accretion disc. It turns out that the MC can be worked out due to Poynting-Robertson cosmic battery (PRCB), and the 3:2 HFQPO pairs associated with the steep power-law states can be fitted in this model. Furthermore, the severe damping problem in the epicyclic resonance model can be overcome by transferring energy from the BH to the inner disc via the MC process for emitting X-rays with sufficient amplitude and coherence to produce the HFQPOs. In addition, we discuss the important role of the magnetic field in state transition of BHXBs.
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