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

doi:10.1051/0004-6361/201936513

	Modified form of the Kompaneets equation Possible application to the distortion of high-temperature blackbody and CMB spectra
	Chen, Xurong 5; Zhang, Xu 3,5; Gao, Haixiang 1; Han, Chengdong 3,5; Liu, Dangbo 2,4
刊名	ASTRONOMY & ASTROPHYSICS
	2021-06-09
卷号	650 页码:17
关键词	scattering radiative transfer methods: analytical X-rays: ISM gamma rays: ISM
ISSN号	0004-6361
DOI	10.1051/0004-6361/201936513
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.
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关键词	X-RAY ; RELATIVISTIC CORRECTIONS ; RADIATIVE-TRANSFER ; ACCRETION DISKS ; COMPTONIZATION ; EMISSION ; CLUSTERS ; PLASMA ; EVOLUTION ; HOLES
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
内容类型	期刊论文
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.