论文标题
用于吸收黑洞的研究的傅立叶光谱计时技术
Fourier spectral-timing techniques for the study of accreting black holes
论文作者
论文摘要
在一系列时间尺度上，来自活性银河核和黑洞X射线二进制的X射线信号是高度变化的。可以利用这种可变性来绘制靠近黑洞的关注区域，该区域太小了，无法直接对宇宙中的两个黑洞除外。光谱定时技术通过结合时间和光谱信息提供因果信息。我对此类技术进行了简短的综述，重点介绍了两个示例：低频准周期振荡（LF QPOS）的X射线混响映射和相分辨光谱。前者提供了一种诊断积聚几何形状和测量参数（例如黑洞质量）的手段，后者也许给出了我们目前对神秘的LF QPO机制的最佳约束。
The X-ray signal from active galactic nuclei and black hole X-ray binaries is highly variable on a range of timescales. This variability can be exploited to map the region of interest close to the black hole, which is far too small to directly image for all but two black holes in the Universe. Spectral-timing techniques provide causal information by combining timing and spectral information. I present a brief review of such techniques, focusing on two examples: X-ray reverberation mapping and phase-resolved spectroscopy of low frequency quasi-periodic oscillations (LF QPOs). The former provides a means to diagnose the accretion geometry and measure parameters such as black hole mass, and the latter gives perhaps the best constraints we currently have as to the enigmatic LF QPO mechanism.
