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| Format: | Preprint |
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2024
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| Online Access: | https://arxiv.org/abs/2410.08988 |
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| author | The LHAASO Collaboration Cao, Zhen Aharonian, Felix Bai, Yun-Xiang Bao, Yi-Wei Bastieri, Denis Bi, Xiao-Jun Bi, Yu-Jiang Bian, Wen-Yi Bukevich, Anatoly V Cai, Chengmiao Cao, Wen-Yu Cao, Zhe Chang, Jin Chang, Jin-Fan Chen, Aming Chen, En-Sheng Chen, Guohai Chen, Hua-Xi Chen, Liang Chen, Long Chen, Ming-Jun Chen, Ma-Li Chen, Qi-Hui Chen, Shi Chen, Su-Hong Chen, Song-Zhan Chen, Tian-Lu Chen, Xiao-Bin Chen, Xuejian Chen, Yang Cheng, Ning Cheng, Yao-Dong Chu, Ming Chung Cui, Ming-Yang Cui, Shu-Wang Cui, Xiao-Hong Cui, Yi-Dong Dai, Ben-Zhong Dai, Hong-Liang Dai, Zigao Luobu, Danzeng Diao, Yang-Xuan Dong, Xu-Qiang Duan, Kai-Kai Fan, Jun-Hui Fan, Yi-Zhong Fang, Jun Fang, Jian-Hua Fang, Kun Feng, Cun-feng Feng, Hua Feng, Li Feng, Shaohui Feng, Xiao-ting Feng, Yi Feng, You-liang Gabici, Stefano Gao, Bo Gao, Chuan-dong Gao, Qi Gao, Wei Gao, Wei-kang Ge, Maomao Ge, Ting-Ting Geng, Lisi Giacinti, Gwenael Gong, Guanghua Gou, Quanbu Gu, Min-Hao Guo, Fu-Lai Guo, Jing Guo, Xiao-Lei Guo, Yi-Qing Guo, Ying-Ying Han, Yi-Ang Hannuksela, Otto A Hasan, Mariam He, Hui-Hai He, Hao-Ning He, Jia-Yin He, Xinyu He, Yu Hernández-Cadena, Sergio Hou, Bo-Wen Hou, Chao Hou, Xian Hu, Hong-Bo Hu, Shi-Cong Huang, Chen Huang, Dai-Hui Huang, Jiajun Huang, Tian-Qi Huang, Wen-Jun Huang, Xing-Tao Huang, Xiao-Yuan Huang, Yong Huang, Yi-Yun Ji, Xiao-Lu Jia, Huan-Yu Jia, Kang Jiang, Hou-Bing Jiang, Kun Jiang, Xiao-Wei Jiang, Ze-Jun Jin, Min Kaci, Samy Kang, Ming-Ming Karpikov, Ivan Khangulyan, Dmitry Kuleshov, Denis Kurinov, Kirill Li, Bing-Bing Li, Cheng Li, Cong Li, Dan Li, Fei Li, Haibo Li, Huicai Li, Jian Li, Jie Li, Kai Li, Long Li, Rong-Lan Li, Si-Da Li, Tian-Yang Li, Wen-Lian Li, Xiu-Rong Li, Xin Li, Yuan Li, Yizhuo Li, Zhe Li, Zhuo Liang, En-Wei Liang, Yun-Feng Lin, Su-Jie Liu, Bing Liu, Cheng Liu, Dong Liu, Dang-Bo Liu, Hu Liu, Hai-Dong Liu, Jia Liu, Jia-Li Liu, Ji-Ren Liu, Mao-Yuan Liu, Ruo-Yu Liu, Si-Ming Liu, Wei Liu, X Liu, Yi Liu, Yu Liu, Yi-Nong Lou, Yu-Qing Luo, Qing Luo, Yu Lv, Hong-Kui Ma, Bo-Qiang Ma, Ling-Ling Ma, Xin-Hua Mao, Ji-Rong Min, Zhen Mitthumsiri, Warit Mou, Guo-Bin Mu, Hui-Jun Neronov, Andrii NG, Kenny Chun Yu Ni, Ming-Yang Nie, Lin Ou, Le-Jian Pattarakijwanich, Petchara Pei, Zhi-Yuan Qi, Jin-Can Qi, Meng-Yao Qin, Jia-Jun Raza, Ali Ren, Chong-Yang Ruffolo, David Sáiz, Alejandro Semikoz, Dmitri Shao, Lang Shchegolev, Oleg Shen, Yun-Zhi Sheng, Xiang-Dong Shi, Zhaodong Shu, Fu-Wen Song, Hui-Chao Stenkin, Yuri V Stepanov, Vladimir Su, Yang Sun, Dongxu Sun, Hao Sun, Qinning Sun, Xiaona Sun, Zhibin Tabasam, Nabeel Hussain Takata, Jumpei Tam, Pak Hin Thomas Tan, Hong-Bin Tang, Qingwen Tang, Ruiyi Tang, Zebo Tian, Wenwu Tong, Chaonan Wan, Li-Hong Wang, Chao Wang, Guangwei Wang, Hongguang Wang, Jiancheng Wang, Ke Wang, Kai Wang, Liping Wang, Lingyu Wang, Lu-Yao Wang, Ran Wang, Wei Wang, Xianggao Wang, Xin-Jian Wang, Xiang-Yu Wang, Yang Wang, Yu-Dong Wang, Zhong-Hai Wang, Zhong-Xiang Wang, Zheng Wei, Da-Ming Wei, Jun-Jie Wei, Yong-Jian Wen, Tao Weng, Shan-Shan Wu, Chao-Yong Wu, Han-Rong Wu, Qing-Wen Wu, Sha Wu, Xue-Feng Wu, Yu-Sheng Xi, Shao-qiang Xia, Jie Xia, Jun-Ji Xiang, Guang-man Xiao, Di-xuan Xiao, Gang Xin, Yu-liang Xing, Yi Xiong, Ding-rong Xiong, Zeng Xu, Dong-lian Xu, Reng-Feng Xu, Ren-Xin Xu, Wei-Li Xue, Liang Yan, Da-Hai Yan, Jing-Zhi Yan, Tian Yang, Chao-Wen Yang, Chu-Yuan Yang, Feng-Fan Yang, Li-Li Yang, Ming-Jie Yang, Rui-Zhi Yang, Wen-Xin Yang, Zihang Yao, Zhi-Guo Ye, Xuan-Ang Yin, Li-Qiao Yin, Na You, Xiao-Hao You, Zhi-Yong Yu, Yan-Hong Yuan, Qiang Yue, Hua Zeng, Hou-Dun Zeng, Ting-Xuan Zeng, Wei Zeng, Xiangtao Zha, Min Zhang, Bin-Bin Zhang, Bing Theodore Zhang, Chao Zhang, Feng Zhang, Hong-Fei Zhang, Hai-Ming Zhang, Heng-Ying Zhang, Jian-Li Zhang, Li Zhang, Peng-Fei Zhang, Pei-Pei Zhang, Rui Zhang, Shao-Ru Zhang, Shou-Shan Zhang, Weiyan Zhang, Xiao Zhang, Xiao-Peng Zhang, Yi Zhang, Yong Zhang, Zhi-Peng Zhao, Jing Zhao, Lei Zhao, Li-Zhi Zhao, Shi-Ping Zhao, Xiao-Hong Zhao, Zihao Zheng, Fu Zhong, Wen-Juan Zhou, Bin Zhou, Hao Zhou, Jia-Neng Zhou, Meng Zhou, Ping Zhou, Rong Zhou, Xiao-Xi Zhou, Xun-Xiu Zhu, Ben-Yang Zhu, Cheng-Guang Zhu, Feng-Rong Zhu, Hui Zhu, Ke-Jun Zou, Yuan-Chuan Zuo, Xiong |
| author_facet | The LHAASO Collaboration Cao, Zhen Aharonian, Felix Bai, Yun-Xiang Bao, Yi-Wei Bastieri, Denis Bi, Xiao-Jun Bi, Yu-Jiang Bian, Wen-Yi Bukevich, Anatoly V Cai, Chengmiao Cao, Wen-Yu Cao, Zhe Chang, Jin Chang, Jin-Fan Chen, Aming Chen, En-Sheng Chen, Guohai Chen, Hua-Xi Chen, Liang Chen, Long Chen, Ming-Jun Chen, Ma-Li Chen, Qi-Hui Chen, Shi Chen, Su-Hong Chen, Song-Zhan Chen, Tian-Lu Chen, Xiao-Bin Chen, Xuejian Chen, Yang Cheng, Ning Cheng, Yao-Dong Chu, Ming Chung Cui, Ming-Yang Cui, Shu-Wang Cui, Xiao-Hong Cui, Yi-Dong Dai, Ben-Zhong Dai, Hong-Liang Dai, Zigao Luobu, Danzeng Diao, Yang-Xuan Dong, Xu-Qiang Duan, Kai-Kai Fan, Jun-Hui Fan, Yi-Zhong Fang, Jun Fang, Jian-Hua Fang, Kun Feng, Cun-feng Feng, Hua Feng, Li Feng, Shaohui Feng, Xiao-ting Feng, Yi Feng, You-liang Gabici, Stefano Gao, Bo Gao, Chuan-dong Gao, Qi Gao, Wei Gao, Wei-kang Ge, Maomao Ge, Ting-Ting Geng, Lisi Giacinti, Gwenael Gong, Guanghua Gou, Quanbu Gu, Min-Hao Guo, Fu-Lai Guo, Jing Guo, Xiao-Lei Guo, Yi-Qing Guo, Ying-Ying Han, Yi-Ang Hannuksela, Otto A Hasan, Mariam He, Hui-Hai He, Hao-Ning He, Jia-Yin He, Xinyu He, Yu Hernández-Cadena, Sergio Hou, Bo-Wen Hou, Chao Hou, Xian Hu, Hong-Bo Hu, Shi-Cong Huang, Chen Huang, Dai-Hui Huang, Jiajun Huang, Tian-Qi Huang, Wen-Jun Huang, Xing-Tao Huang, Xiao-Yuan Huang, Yong Huang, Yi-Yun Ji, Xiao-Lu Jia, Huan-Yu Jia, Kang Jiang, Hou-Bing Jiang, Kun Jiang, Xiao-Wei Jiang, Ze-Jun Jin, Min Kaci, Samy Kang, Ming-Ming Karpikov, Ivan Khangulyan, Dmitry Kuleshov, Denis Kurinov, Kirill Li, Bing-Bing Li, Cheng Li, Cong Li, Dan Li, Fei Li, Haibo Li, Huicai Li, Jian Li, Jie Li, Kai Li, Long Li, Rong-Lan Li, Si-Da Li, Tian-Yang Li, Wen-Lian Li, Xiu-Rong Li, Xin Li, Yuan Li, Yizhuo Li, Zhe Li, Zhuo Liang, En-Wei Liang, Yun-Feng Lin, Su-Jie Liu, Bing Liu, Cheng Liu, Dong Liu, Dang-Bo Liu, Hu Liu, Hai-Dong Liu, Jia Liu, Jia-Li Liu, Ji-Ren Liu, Mao-Yuan Liu, Ruo-Yu Liu, Si-Ming Liu, Wei Liu, X Liu, Yi Liu, Yu Liu, Yi-Nong Lou, Yu-Qing Luo, Qing Luo, Yu Lv, Hong-Kui Ma, Bo-Qiang Ma, Ling-Ling Ma, Xin-Hua Mao, Ji-Rong Min, Zhen Mitthumsiri, Warit Mou, Guo-Bin Mu, Hui-Jun Neronov, Andrii NG, Kenny Chun Yu Ni, Ming-Yang Nie, Lin Ou, Le-Jian Pattarakijwanich, Petchara Pei, Zhi-Yuan Qi, Jin-Can Qi, Meng-Yao Qin, Jia-Jun Raza, Ali Ren, Chong-Yang Ruffolo, David Sáiz, Alejandro Semikoz, Dmitri Shao, Lang Shchegolev, Oleg Shen, Yun-Zhi Sheng, Xiang-Dong Shi, Zhaodong Shu, Fu-Wen Song, Hui-Chao Stenkin, Yuri V Stepanov, Vladimir Su, Yang Sun, Dongxu Sun, Hao Sun, Qinning Sun, Xiaona Sun, Zhibin Tabasam, Nabeel Hussain Takata, Jumpei Tam, Pak Hin Thomas Tan, Hong-Bin Tang, Qingwen Tang, Ruiyi Tang, Zebo Tian, Wenwu Tong, Chaonan Wan, Li-Hong Wang, Chao Wang, Guangwei Wang, Hongguang Wang, Jiancheng Wang, Ke Wang, Kai Wang, Liping Wang, Lingyu Wang, Lu-Yao Wang, Ran Wang, Wei Wang, Xianggao Wang, Xin-Jian Wang, Xiang-Yu Wang, Yang Wang, Yu-Dong Wang, Zhong-Hai Wang, Zhong-Xiang Wang, Zheng Wei, Da-Ming Wei, Jun-Jie Wei, Yong-Jian Wen, Tao Weng, Shan-Shan Wu, Chao-Yong Wu, Han-Rong Wu, Qing-Wen Wu, Sha Wu, Xue-Feng Wu, Yu-Sheng Xi, Shao-qiang Xia, Jie Xia, Jun-Ji Xiang, Guang-man Xiao, Di-xuan Xiao, Gang Xin, Yu-liang Xing, Yi Xiong, Ding-rong Xiong, Zeng Xu, Dong-lian Xu, Reng-Feng Xu, Ren-Xin Xu, Wei-Li Xue, Liang Yan, Da-Hai Yan, Jing-Zhi Yan, Tian Yang, Chao-Wen Yang, Chu-Yuan Yang, Feng-Fan Yang, Li-Li Yang, Ming-Jie Yang, Rui-Zhi Yang, Wen-Xin Yang, Zihang Yao, Zhi-Guo Ye, Xuan-Ang Yin, Li-Qiao Yin, Na You, Xiao-Hao You, Zhi-Yong Yu, Yan-Hong Yuan, Qiang Yue, Hua Zeng, Hou-Dun Zeng, Ting-Xuan Zeng, Wei Zeng, Xiangtao Zha, Min Zhang, Bin-Bin Zhang, Bing Theodore Zhang, Chao Zhang, Feng Zhang, Hong-Fei Zhang, Hai-Ming Zhang, Heng-Ying Zhang, Jian-Li Zhang, Li Zhang, Peng-Fei Zhang, Pei-Pei Zhang, Rui Zhang, Shao-Ru Zhang, Shou-Shan Zhang, Weiyan Zhang, Xiao Zhang, Xiao-Peng Zhang, Yi Zhang, Yong Zhang, Zhi-Peng Zhao, Jing Zhao, Lei Zhao, Li-Zhi Zhao, Shi-Ping Zhao, Xiao-Hong Zhao, Zihao Zheng, Fu Zhong, Wen-Juan Zhou, Bin Zhou, Hao Zhou, Jia-Neng Zhou, Meng Zhou, Ping Zhou, Rong Zhou, Xiao-Xi Zhou, Xun-Xiu Zhu, Ben-Yang Zhu, Cheng-Guang Zhu, Feng-Rong Zhu, Hui Zhu, Ke-Jun Zou, Yuan-Chuan Zuo, Xiong |
| contents | Black holes (BH), one of the most intriguing objects in the universe, can manifest themselves through electromagnetic radiation initiated by the accretion flow. Some stellar-mass BHs drive relativistic jets when accreting matter from their companion stars, forming microquasars. Non-thermal emission from the radio to tera-electronvolt (TeV) gamma-ray band has been observed from microquasars, indicating the acceleration of relativistic particles. Here we report detection of four microquasars (SS 433, V4641 Sgr, GRS 1915+105, MAXI J1820+070) of spectrum extending to the ultrahigh-energy (UHE; photon energy $E>100$ TeV) band and one microquasar (Cygnus X-1) of spectrum approaching 100 TeV, using the Large High Altitude Air Shower Observatory (LHAASO). Notably, the total emission associated with SS 433 cannot be interpreted with a single leptonic component. In the UHE band, its emission is in spatial coincidence with a giant atomic cloud, which is consistent with a hadronic origin. An elongated source is discovered from V4641 Sgr with the spectrum continuing up to 800 TeV. The detection of UHE gamma rays demonstrates that accreting BHs and their environments can operate as extremely efficient accelerators of particles out of 1 peta-electronvolt (PeV), suggesting microquasars to be important contributors to Galactic cosmic rays especially around the `knee' region. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_08988 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Ultrahigh-Energy Gamma-ray Emission Associated with Black Hole-Jet Systems The LHAASO Collaboration Cao, Zhen Aharonian, Felix Bai, Yun-Xiang Bao, Yi-Wei Bastieri, Denis Bi, Xiao-Jun Bi, Yu-Jiang Bian, Wen-Yi Bukevich, Anatoly V Cai, Chengmiao Cao, Wen-Yu Cao, Zhe Chang, Jin Chang, Jin-Fan Chen, Aming Chen, En-Sheng Chen, Guohai Chen, Hua-Xi Chen, Liang Chen, Long Chen, Ming-Jun Chen, Ma-Li Chen, Qi-Hui Chen, Shi Chen, Su-Hong Chen, Song-Zhan Chen, Tian-Lu Chen, Xiao-Bin Chen, Xuejian Chen, Yang Cheng, Ning Cheng, Yao-Dong Chu, Ming Chung Cui, Ming-Yang Cui, Shu-Wang Cui, Xiao-Hong Cui, Yi-Dong Dai, Ben-Zhong Dai, Hong-Liang Dai, Zigao Luobu, Danzeng Diao, Yang-Xuan Dong, Xu-Qiang Duan, Kai-Kai Fan, Jun-Hui Fan, Yi-Zhong Fang, Jun Fang, Jian-Hua Fang, Kun Feng, Cun-feng Feng, Hua Feng, Li Feng, Shaohui Feng, Xiao-ting Feng, Yi Feng, You-liang Gabici, Stefano Gao, Bo Gao, Chuan-dong Gao, Qi Gao, Wei Gao, Wei-kang Ge, Maomao Ge, Ting-Ting Geng, Lisi Giacinti, Gwenael Gong, Guanghua Gou, Quanbu Gu, Min-Hao Guo, Fu-Lai Guo, Jing Guo, Xiao-Lei Guo, Yi-Qing Guo, Ying-Ying Han, Yi-Ang Hannuksela, Otto A Hasan, Mariam He, Hui-Hai He, Hao-Ning He, Jia-Yin He, Xinyu He, Yu Hernández-Cadena, Sergio Hou, Bo-Wen Hou, Chao Hou, Xian Hu, Hong-Bo Hu, Shi-Cong Huang, Chen Huang, Dai-Hui Huang, Jiajun Huang, Tian-Qi Huang, Wen-Jun Huang, Xing-Tao Huang, Xiao-Yuan Huang, Yong Huang, Yi-Yun Ji, Xiao-Lu Jia, Huan-Yu Jia, Kang Jiang, Hou-Bing Jiang, Kun Jiang, Xiao-Wei Jiang, Ze-Jun Jin, Min Kaci, Samy Kang, Ming-Ming Karpikov, Ivan Khangulyan, Dmitry Kuleshov, Denis Kurinov, Kirill Li, Bing-Bing Li, Cheng Li, Cong Li, Dan Li, Fei Li, Haibo Li, Huicai Li, Jian Li, Jie Li, Kai Li, Long Li, Rong-Lan Li, Si-Da Li, Tian-Yang Li, Wen-Lian Li, Xiu-Rong Li, Xin Li, Yuan Li, Yizhuo Li, Zhe Li, Zhuo Liang, En-Wei Liang, Yun-Feng Lin, Su-Jie Liu, Bing Liu, Cheng Liu, Dong Liu, Dang-Bo Liu, Hu Liu, Hai-Dong Liu, Jia Liu, Jia-Li Liu, Ji-Ren Liu, Mao-Yuan Liu, Ruo-Yu Liu, Si-Ming Liu, Wei Liu, X Liu, Yi Liu, Yu Liu, Yi-Nong Lou, Yu-Qing Luo, Qing Luo, Yu Lv, Hong-Kui Ma, Bo-Qiang Ma, Ling-Ling Ma, Xin-Hua Mao, Ji-Rong Min, Zhen Mitthumsiri, Warit Mou, Guo-Bin Mu, Hui-Jun Neronov, Andrii NG, Kenny Chun Yu Ni, Ming-Yang Nie, Lin Ou, Le-Jian Pattarakijwanich, Petchara Pei, Zhi-Yuan Qi, Jin-Can Qi, Meng-Yao Qin, Jia-Jun Raza, Ali Ren, Chong-Yang Ruffolo, David Sáiz, Alejandro Semikoz, Dmitri Shao, Lang Shchegolev, Oleg Shen, Yun-Zhi Sheng, Xiang-Dong Shi, Zhaodong Shu, Fu-Wen Song, Hui-Chao Stenkin, Yuri V Stepanov, Vladimir Su, Yang Sun, Dongxu Sun, Hao Sun, Qinning Sun, Xiaona Sun, Zhibin Tabasam, Nabeel Hussain Takata, Jumpei Tam, Pak Hin Thomas Tan, Hong-Bin Tang, Qingwen Tang, Ruiyi Tang, Zebo Tian, Wenwu Tong, Chaonan Wan, Li-Hong Wang, Chao Wang, Guangwei Wang, Hongguang Wang, Jiancheng Wang, Ke Wang, Kai Wang, Liping Wang, Lingyu Wang, Lu-Yao Wang, Ran Wang, Wei Wang, Xianggao Wang, Xin-Jian Wang, Xiang-Yu Wang, Yang Wang, Yu-Dong Wang, Zhong-Hai Wang, Zhong-Xiang Wang, Zheng Wei, Da-Ming Wei, Jun-Jie Wei, Yong-Jian Wen, Tao Weng, Shan-Shan Wu, Chao-Yong Wu, Han-Rong Wu, Qing-Wen Wu, Sha Wu, Xue-Feng Wu, Yu-Sheng Xi, Shao-qiang Xia, Jie Xia, Jun-Ji Xiang, Guang-man Xiao, Di-xuan Xiao, Gang Xin, Yu-liang Xing, Yi Xiong, Ding-rong Xiong, Zeng Xu, Dong-lian Xu, Reng-Feng Xu, Ren-Xin Xu, Wei-Li Xue, Liang Yan, Da-Hai Yan, Jing-Zhi Yan, Tian Yang, Chao-Wen Yang, Chu-Yuan Yang, Feng-Fan Yang, Li-Li Yang, Ming-Jie Yang, Rui-Zhi Yang, Wen-Xin Yang, Zihang Yao, Zhi-Guo Ye, Xuan-Ang Yin, Li-Qiao Yin, Na You, Xiao-Hao You, Zhi-Yong Yu, Yan-Hong Yuan, Qiang Yue, Hua Zeng, Hou-Dun Zeng, Ting-Xuan Zeng, Wei Zeng, Xiangtao Zha, Min Zhang, Bin-Bin Zhang, Bing Theodore Zhang, Chao Zhang, Feng Zhang, Hong-Fei Zhang, Hai-Ming Zhang, Heng-Ying Zhang, Jian-Li Zhang, Li Zhang, Peng-Fei Zhang, Pei-Pei Zhang, Rui Zhang, Shao-Ru Zhang, Shou-Shan Zhang, Weiyan Zhang, Xiao Zhang, Xiao-Peng Zhang, Yi Zhang, Yong Zhang, Zhi-Peng Zhao, Jing Zhao, Lei Zhao, Li-Zhi Zhao, Shi-Ping Zhao, Xiao-Hong Zhao, Zihao Zheng, Fu Zhong, Wen-Juan Zhou, Bin Zhou, Hao Zhou, Jia-Neng Zhou, Meng Zhou, Ping Zhou, Rong Zhou, Xiao-Xi Zhou, Xun-Xiu Zhu, Ben-Yang Zhu, Cheng-Guang Zhu, Feng-Rong Zhu, Hui Zhu, Ke-Jun Zou, Yuan-Chuan Zuo, Xiong High Energy Astrophysical Phenomena Black holes (BH), one of the most intriguing objects in the universe, can manifest themselves through electromagnetic radiation initiated by the accretion flow. Some stellar-mass BHs drive relativistic jets when accreting matter from their companion stars, forming microquasars. Non-thermal emission from the radio to tera-electronvolt (TeV) gamma-ray band has been observed from microquasars, indicating the acceleration of relativistic particles. Here we report detection of four microquasars (SS 433, V4641 Sgr, GRS 1915+105, MAXI J1820+070) of spectrum extending to the ultrahigh-energy (UHE; photon energy $E>100$ TeV) band and one microquasar (Cygnus X-1) of spectrum approaching 100 TeV, using the Large High Altitude Air Shower Observatory (LHAASO). Notably, the total emission associated with SS 433 cannot be interpreted with a single leptonic component. In the UHE band, its emission is in spatial coincidence with a giant atomic cloud, which is consistent with a hadronic origin. An elongated source is discovered from V4641 Sgr with the spectrum continuing up to 800 TeV. The detection of UHE gamma rays demonstrates that accreting BHs and their environments can operate as extremely efficient accelerators of particles out of 1 peta-electronvolt (PeV), suggesting microquasars to be important contributors to Galactic cosmic rays especially around the `knee' region. |
| title | Ultrahigh-Energy Gamma-ray Emission Associated with Black Hole-Jet Systems |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2410.08988 |