Disks around merging binary black holes: From GW150914 to supermassive black holes
Disks around merging binary black holes: From GW150914 to supermassive black holes
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合并双黑洞周围的圆盘：从 GW150914 到超大质量黑洞
DOI：
10.1103/physrevd.97.044036
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发表时间：
2018
影响因子：
5
通讯作者：
Shapiro, Stuart L.
中科院分区：
文献类型：
--
作者：
Khan, Abid;Paschalidis, Vasileios;Ruiz, Milton;Shapiro, Stuart L.
在完全广义相对论下，对具有质量比的非自旋黑洞双星进行了磁流体动力学模拟。我们调查不同的磁盘模型，不同的尺度高度，总尺寸和磁场，以量化的鲁棒性以前的模拟初始磁盘模型。将我们的模拟缩放到LIGO GW 150914，我们发现这样的系统可以解释可能的引力波和电磁对应物，例如在GW 150915结束后0.4秒报告的费米GBM硬X射线信号。缩放我们的模拟超大质量的二元黑洞，我们发现，可观察到的流动特性，如吸积率周期性，出现整个inspiral的射流，合并和合并后，磁盘温度，热频率，并合并之间的时间延迟和喷气流出，我们在早期的研究报告显示只有适度的依赖于我们考虑在这里的初始磁盘模型。
We perform magnetohydrodynamic simulations in full general relativity of disk accretion onto nonspinning black hole binaries with mass ratio. We survey different disk models which differ in their scale height, total size and magnetic field to quantify the robustness of previous simulations on the initial disk model. Scaling our simulations to LIGO GW150914 we find that such systems could explain possible gravitational wave and electromagnetic counterparts such as the Fermi GBM hard x-ray signal reported 0.4 s after GW150915 ended. Scaling our simulations to supermassive binary black holes, we find that observable flow properties such as accretion rate periodicities, the emergence of jets throughout inspiral, merger and postmerger, disk temperatures, thermal frequencies, and the time delay between merger and the boost in jet outflows that we reported in earlier studies display only modest dependence on the initial disk model we consider here.