论文标题
Maxi J1348-630的型C型准周期振荡的可变性和相位滞后
Variability and phase lags of the type-C quasi-periodic oscillation of MAXI J1348-630 with NICER
论文作者
论文摘要
我们研究了Maxi J1348-630在其2019年爆发期间的型C型准周期振荡（type-c QPO）的特性，并与NoTER相反。这是第一次在爆发反射期间研究类型-C QPO的属性的演变。我们发现，回流过程中类型-C QPO的性质与在爆发过程中其他黑洞系统中观察到的类型-C QPO相似。这表明负责C QPO的物理过程在反弹和爆发中是相同的。我们还发现，在回流过程中观察到的高频宽带成分的FWHM随能量发生了显着变化。我们研究了从0.5 keV到12 keV的type-c QPO的能量依赖性分数RMS振幅和相位滞后。我们发现，分数RMS幅度最高为2-3 keV，然后在该能量上保持差异大约恒定，并且Type-C QPO的滞后光谱很难。我们讨论了分数RMS振幅和相位滞后在构成背景下的能量的依赖性，因为辐射机制驱动了QPO RMS和滞后光谱。
We study the properties of the type-C quasi-periodic oscillation (type-C QPO) of MAXI J1348-630 during its 2019 outburst and reflare with NICER. This is the first time that the evolution of the properties of type-C QPOs is studied during an outburst reflare. We found that the properties of the type-C QPO during the reflare are similar to those of type-C QPOs observed in other black-hole systems during outburst. This suggests that the physical processes responsible for type-C QPOs are the same in a reflare and in an outburst. We also found that the FWHM of a high-frequency broadband component observed during the reflare changes significantly with energy. We studied the energy-dependent fractional rms amplitude and phase lags of the type-C QPO from 0.5 keV to 12 keV. We found that the fractional rms amplitude increases up to 2-3 keV and then remains approximately constant above this energy, and the lag spectra of the type-C QPO are hard. We discuss the dependence of the fractional rms amplitude and phase lags with energy in the context of Comptonisation as the radiative mechanism driving the QPO rms and lag spectra.
