黑洞X射线二进制4U 1630-47中MHz准常规调制现象的洞察力HXMT视图

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黑洞X射线二进制4U 1630-47中MHz准常规调制现象的洞察力HXMT视图

An Insight-HXMT view of the mHz quasi-regular modulation phenomenon in the black hole X-ray binary 4U 1630-47

论文作者

Yang, Zi-Xu, Zhang, Liang, Huang, Yue, Bu, Qingcui, Zhang, Zhen, Liu, He-Xin, Yu, Wei, Wang, Peng-Ju, Zhao, Q. C., Tao, L., Qu, Jin-Lu, Zhang, Shu, Zhang, Shuang-Nan, Song, Liming, Lu, Fangjun, Cao, Xuelei, Chen, Li, Cai, Ce, Chang, Zhi, Chen, Tianxian, Chen, Yong, Chen, Yupeng, Chen, Yibao, Cui, Weiwei, Ding, Guoqiang, Du, Yuanyuan, Gao, GuanHua, Gao, He, Ge, Mingyu, Gu, Yudong, Guan, Ju, Guo, Chengcheng, Han, Dawei, Huo, Jia, Jia, Shumei, Jiang, Weichun, Jin, Jing, Kong, Lingda, Li, Bing, Li, Gang, Li, Wei, Li, Xian, Li, Xufang, Li, Zhengwei, Li, Chengkui, Lin, Lin, Liu, Congzhan, Li, Tipei, Li, Xiaobo, Liang, Xiaohua, Liao, Jinyuan, Liu, Hongwei, Liu, Xiaojing, Lu, Xuefeng, Luo, Qi, Luo, Tao, Ma, Binyuan, Ma, Ruican, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, Jianyin, Ou, Ge, Ren, Xiaoqin, Sai, Na, Song, Xinying, Sun, Liang, Tan, Ying, Tuo, Youli, Wang, Chen, Wang, Wenshuai, Wang, Lingjun, Wang, Yusa, Wang, Jieshuang, Wen, Xiangyang, Wu, Bobing, Wu, Baiyang, Wu, Mei, Xiao, Shuo, Xu, Yupeng, Xiong, Shaolin, Yang, Sheng, Yang, Yanji, Yi, Qibin, Yin, Qianqing, You, Yuan, Zhang, Bing, Zhang, Fan, Zhang, Hongmei, Zhang, Juan, Zhang, Wanchang, Zhang, Wei, Zhang, Binbin, Zhang, Peng, Zhang, Yifei, Zhang, Yuanhang, Zhao, Haisheng, Zhao, Xiaofan, Zheng, Shijie, Zhou, Dengke

论文摘要

在这里，我们使用硬X射线调制望远镜的观察结果报告了黑洞X射线二进制4U 1630-47的黑洞X射线二进制4U 1630-47的结果。在爆发期间，检测到60 MHz附近的1.6--4.2 Hz和准常规调制（QRM）中的类型-C准周期振荡（QPO）。在8--35 KEV能量带中，MHz QRM的分数RMS为10％-16％，Q因子（频率/宽度）为2--4。受益于HXMT的宽能带，我们首次研究了60 MHz QRM的能量依赖性。我们发现，MHz QRM的分数RMS随光子能量增加，而MHz QRM的时间滞后柔软，并且随光子能量而减小。在爆发期间，在不到一小时的时间范围内，MHz QRM的快速复发。在此期间，当源从QRM状态到非QRM状态的源过渡时，相应的能谱会发生中等变化。 QRM现象还显示出与积聚率的依赖性。我们建议QRM可能是由于电晕引起的未知积聚不稳定引起的。

Here we report the spectral-timing results of the black hole X-ray binary 4U 1630-47 during its 2021 outburst using observations from the Hard X-ray Modulation Telescope. Type-C quasi-periodic oscillations (QPOs) in 1.6--4.2 Hz and quasi-regular modulation (QRM) near 60 mHz are detected during the outburst. The mHz QRM has a fractional rms of 10%--16% in the 8--35 keV energy band with a Q factor (frequency/width) of 2--4. Benefiting from the broad energy band of hxmt, we study the energy dependence of the 60 mHz QRM in 1--100 keV for the first time. We find that the fractional rms of the mHz QRM increases with photon energy, while the time lags of the mHz QRM are soft and decrease with photon energy. Fast recurrence of the mHz QRM, in a timescale of less than one hour, has been observed during the outburst. During this period, the corresponding energy spectra moderately change when the source transitions from the QRM state to the non-QRM state. The QRM phenomena also shows a dependence with the accretion rate. We suggest that the QRM could be caused by an unknown accretion instability aroused from the corona.

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