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Modified form of the Kompaneets equation Possible application to the distortion of high-temperature blackbody and CMB spectra

文献类型：期刊论文

作者Chen, Xurong5; Zhang, Xu3,5; Gao, Haixiang1; Han, Chengdong3,5; Liu, Dangbo2,4
刊名ASTRONOMY & ASTROPHYSICS
出版日期2021-06-09
卷号650页码:17
ISSN号0004-6361
关键词scattering radiative transfer methods: analytical X-rays: ISM gamma rays: ISM
DOI10.1051/0004-6361/201936513
通讯作者Chen, Xurong(xchen@impcas.ac.cn)
英文摘要Comptonization is a very important phenomenon in astrophysics. The Kompaneets equation describes the Comptonization process in up-Comptonization (h (nu) over bar << kT(e)), while it fails in describing the down-Comptonization (h (nu) over bar >> kT(e)), which is the most important radiative transfer process in hard X-ray and gamma-ray astronomy. In this study we extend the Kompaneets equation to a new modified equation which works in a more general Comptonization process, including up- and down-Comptonization, suitable for the cases h (nu) over bar << kT(e), h (nu) over bar >> kT(e), and h (nu) over bar similar to kT(e). Numerical solutions for the evolution behavior of Gaussian emission lines show excellent agreement between the classical equations and our new equation for up-Comptonization, while the big di fferences are displayed for down-Comptonization. Based on this extended equation, the modified Sunyaev-Zel'dovich e ffect is investigated. Instead, some typical calculated results for up- and down-Comptonization in X-ray astronomy are compared between the new equation and the Kompaneets equation. The potential applications of the extended equation in astrophysics are also highly emphasized for further study.
WOS关键词X-RAY ; RELATIVISTIC CORRECTIONS ; RADIATIVE-TRANSFER ; ACCRETION DISKS ; COMPTONIZATION ; EMISSION ; CLUSTERS ; PLASMA ; EVOLUTION ; HOLES
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB34030301] ; National Science Foundation of China[U1631101] ; National Science Foundation of China[11665022] ; National Science Foundation of China[11233006] ; Shanghai Science and Technology Commission[16ZR1417200]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者EDP SCIENCES S A
WOS记录号WOS:000663016300001
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; National Science Foundation of China ; Shanghai Science and Technology Commission
源URL[http://119.78.100.186/handle/113462/137202]  
专题中国科学院近代物理研究所
通讯作者Chen, Xurong
作者单位1.Shanghai Jiao Tong Univ, Zhiyuan Coll, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
2.Shanghai Jiao Tong Univ, Shanghai Key Lab Particle Phys & Cosmol, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Shanghai Jiao Tong Univ, Sch Phys & Astron, Dept Astron, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
5.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Xurong,Zhang, Xu,Gao, Haixiang,et al. Modified form of the Kompaneets equation Possible application to the distortion of high-temperature blackbody and CMB spectra[J]. ASTRONOMY & ASTROPHYSICS,2021,650:17.
APA Chen, Xurong,Zhang, Xu,Gao, Haixiang,Han, Chengdong,&Liu, Dangbo.(2021).Modified form of the Kompaneets equation Possible application to the distortion of high-temperature blackbody and CMB spectra.ASTRONOMY & ASTROPHYSICS,650,17.
MLA Chen, Xurong,et al."Modified form of the Kompaneets equation Possible application to the distortion of high-temperature blackbody and CMB spectra".ASTRONOMY & ASTROPHYSICS 650(2021):17.

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来源：近代物理研究所

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