利用慧眼-HXMT在黑洞X射线双星中发现200 keV以上的振荡
高能天体物理现象
2020-09-23 v1
摘要
低频准周期振荡（LFQPOs）常见于黑洞X射线双星中，其起源仍有争议。LFQPOs在高能段（30 keV以上）的性质与内区吸积流的本质密切相关，因此在严格检验各种理论模型中起关键作用。硬X射线调制望远镜（Insight-HXMT）能够探测30 keV以上的辐射，因此是开展此类观测的理想仪器。本文报道在硬X射线态的新黑洞MAXI J1820+070中发现200 keV以上的LFQPOs，这使我们能够理解LFQPOs在数百千电子伏能段的行为。该LFQPO的相位滞后在30 keV以下接近零且基本不变，在30 keV以上变为软滞后（即高能光子先到达）。软滞后随能量逐渐增大，在150-200 keV能段达到约0.9秒。在200 keV以上能段的探测、大的软滞后以及LFQPO的能量相关行为对目前大多数现有模型提出了巨大挑战，但表明LFQPO可能起源于小尺度喷流的进动。
引用
@article{arxiv.2009.10607,
title = {Discovery of oscillations above 200 keV in a black hole X-ray binary with Insight-HXMT},
author = {Xiang Ma and Lian Tao and Shuang-Nan Zhang and Liang Zhang and Qing-Cui Bu and Ming-Yu Ge and Yu-Peng Chen and Jin-Lu Qu and Shu Zhang and Fang-Jun Lu and Li-Ming Song and Yi-Jung Yang and Feng Yuan and Ce Cai and Xue-Lei Cao and Zhi Chang and Gang Chen and Li Chen and Tian-Xiang Chen and Yi-Bao Chen and Yong Chen and Wei Cui and Wei-Wei Cui and Jing-Kang Deng and Yong-Wei Dong and Yuan-Yuan Du and Min-Xue Fu and Guan-Hua Gao and He Gao and Min Gao and Yu-Dong Gu and Ju Guan and Cheng-Cheng Guo and Da-Wei Han and Yue Huang and Jia Huo and Long Ji and Shu-Mei Jia and Lu-Hua Jiang and Wei-Chun Jiang and Jing Jin and Yong-Jie Jin and Ling-Da Kong and Bing Li and Cheng-Kui Li and Gang Li and Mao-Shun Li and Ti-Pei Li and Wei Li and Xian Li and Xiao-Bo Li and Xu-Fang Li and Yan-Guo Li and Zheng-Wei Li and Xiao-Hua Liang and Jin-Yuan Liao and Bai-Sheng Liu and Cong-Zhan Liu and Guo-Qing Liu and Hong-Wei Liu and Xiao-Jing Liu and Yi-Nong Liu and Bo Lu and Xue-Feng Lu and Qi Luo and Tao Luo and Bin Meng and Yi Nang and Jian-Yin Nie and Ge Ou and Na Sai and Ren-Cheng Shang and Xin-Ying Song and Liang Sun and Ying Tan and Yuo-Li Tuo and Chen Wang and Guo-Feng Wang and Juan Wang and Ling-Jun Wang and Wen-Shuai Wang and Yu-Sa Wang and Xiang-Yang Wen and Bai-Yang Wu and Bo-Bing Wu and Mei Wu and Guang-Cheng Xiao and Shuo Xiao and Fu-Guo Xie and Shao-Lin Xiong and He Xu and Yu-Peng Xu and Jia-Wei Yang and Sheng Yang and Yan-Ji Yang and Qi-Bin Yi and Qian-Qing Yin and Yuan You and Ai-Mei Zhang and Cheng-Mo Zhang and Fan Zhang and Hong-Mei Zhang and Juan Zhang and Tong Zhang and Wan-Chang Zhang and Wei Zhang and Wen-Zhao Zhang and Yi Zhang and Yi-Fei Zhang and Yong-Jie Zhang and Yue Zhang and Zhao Zhang and Zhi Zhang and Zi-Liang Zhang and Hai-Sheng Zhao and Xiao-Fan Zhao and Shi-Jie Zheng and Deng-Ke Zhou and Jian-Feng Zhou and Yu-Xuan Zhu and Yue Zhu and Ren-Lin Zhuang},
journal= {arXiv preprint arXiv:2009.10607},
year = {2020}
}
备注
36 pages, 12 figures, 3 tables; published in Nature Astronomy