Magnetic-reconnection-heated corona model: implication of hybrid electrons for hard X-ray emission of luminous active galactic nuclei
文献类型：期刊论文
| 作者 | Liu JY(刘杰英)1,4,5,6 ; Mao JR(毛基荣)1,5,6; Liu, B F2,3
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2024-01 |
| 卷号 | 527期号:3页码:5627-5637 |
| ISSN号 | 0035-8711 |
| 关键词 | accretion, accretion discs magnetic fields galaxies: active galaxies: nuclei |
| DOI | 10.1093/mnras/stad3615 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | It is widely accepted that X-ray emission in luminous active galactic nuclei (AGNs) originates from hot corona. To prevent the corona from overcooling by strong X-ray emission, steady heating to the corona is essential, for which the most promising mechanisms is the magnetic reconnection. Detailed studies of the coupled disc and corona, in the frame of magnetic field transferring accretion-released energy from the disc to the corona, reveal that the thermal electrons can only produce X-ray spectrum with Gamma(2-10) (keV) > 2.1, which is an inevitable consequence of the radiative coupling of the thermal corona and disc. In this work, we develop the magnetic-reconnection-heated corona model by taking into account the potential non-thermal electrons accelerated in the magnetic reconnection process, in addition to the thermal electrons. We show that the features of the structure and spectrum of the coupled disc and corona can be affected by the fraction of magnetic energy allocated to thermal electrons. Furthermore, we investigate the effects of the power-law index and energy range of non-thermal electrons and the magnetic field on the spectrum. It is found that the X-ray spectrum from the Comptonization of the hybrid electrons can be flatter than that from thermal electrons only, in agreement with observations. By comparing with the observed hard X-ray data, we suggest that a large fraction ( > 40 per cent) of the magnetic energy be allocated to the non-thermal electrons in the luminous and flat X-ray spectrum AGNs. |
| 学科主题 | 天文学 |
| URL标识 | 查看原文 |
| 出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
| WOS关键词 | NONTHERMAL PARTICLE-ACCELERATION ; SUPERMASSIVE BLACK-HOLES ; PAIR PRODUCTION ; ACCRETION DISKS ; SPECTRA ; TURBULENCE ; RADIATION ; ORIGIN ; COMPTONIZATION ; POLARIZATION |
| 资助项目 | National Key R&D Program of China[2023YFE0101200]; National Key R&D Program of China[2021YFA1600402]; Strategic Priority Research Program of Chinese Academy of Sciences[XDB 41000000]; Natural Science Foundation of Yunnan Province[202201AT070158]; Yunnan Revitalization Talent Support Program Young Talent Project; National Natural Science Foundation of China[12073037]; National Natural Science Foundation of China[12333004]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; CSST[CMS-CSST-2021-A06]; Yunnan Revitalization Talent Support Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:001131511000021 |
| 资助机构 | National Key R&D Program of China[2023YFE0101200, 2021YFA1600402] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB 41000000] ; Natural Science Foundation of Yunnan Province[202201AT070158] ; Yunnan Revitalization Talent Support Program Young Talent Project ; National Natural Science Foundation of China[12073037, 12333004] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; CSST[CMS-CSST-2021-A06] ; Yunnan Revitalization Talent Support Program |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/26534]  |
| 专题 | 云南天文台_恒星物理研究组 云南天文台_中国科学院天体结构与演化重点实验室 星系类星体研究组 |
| 作者单位 | 1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China; 2.School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China 3.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China; 4.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, P. R. China; 5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China; 6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, Yunnan Province, China; |
| 推荐引用方式 GB/T 7714 | Liu JY,Mao JR,Liu, B F. Magnetic-reconnection-heated corona model: implication of hybrid electrons for hard X-ray emission of luminous active galactic nuclei[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,527(3):5627-5637. |
| APA | 刘杰英,毛基荣,&Liu, B F.(2024).Magnetic-reconnection-heated corona model: implication of hybrid electrons for hard X-ray emission of luminous active galactic nuclei.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,527(3),5627-5637. |
| MLA | 刘杰英,et al."Magnetic-reconnection-heated corona model: implication of hybrid electrons for hard X-ray emission of luminous active galactic nuclei".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 527.3(2024):5627-5637. |
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来源：云南天文台
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