MHD simulations of inward shocks in Cassiopeia A

doi:10.1088/1674-4527/20/4/48

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	MHD simulations of inward shocks in Cassiopeia A
	Yang CY(杨初源)1,2,3 ; Bao Bi-Wen 4; Liu Si-Ming 5
发表期刊	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2020-04-01
卷号	20 期号:4 页码:5
DOI	10.1088/1674-4527/20/4/48
产权排序	第1完成单位
收录类别	SCI ; CSCD
关键词	acceleration of particles supernovae individual (Cassiopeia A) ISM supernova remnants X-rays ISM
摘要	Cassiopeia A, the brightest radio supernova remnant (SNR) in the sky, has several unique characteristics in comparison to its peers. Besides its radio brightness and prominent soft-concave radio spectrum, its gamma-ray spectrum appears to have a low-energy cutoff near 2 GeV, and it is the only SNR with prominent hard X-ray emission. While the unusual radio properties may be attributed to strong emission from reverse shocks, the hard X-ray emission has been associated with high-speed inward shocks induced by high density gases. Then, the low-energy gamma-ray spectral cutoff could be attributed to slow penetration of lower energy particles accelerated near the inward shocks into high-density emission zone. In this paper, we carry out magneto-hydrodynamic (MHD) simulations of shocks in Cassiopeia A and demonstrate that its inward shock structure can indeed be reproduced via shock interactions with clumps of gases with a density of similar to 20 cm(-3).
资助项目	National Key Research & Development Program of China[2018YFA0404203] ; National Natural Science Foundation of China[U1931204] ; National Natural Science Foundation of China[U1738122] ; National Natural Science Foundation of China[11761131007] ; National Natural Science Foundation of China[11673060] ; National Natural Science Foundation of China[11433004] ; International Partnership Program of Chinese Academy of Sciences[114332KYSB20170008] ; Top Talents Program of Yunnan Province ; Natural Science Foundation of Yunnan Province[2016FB003] ; Natural Science Foundation of Yunnan Province[2018FY001(-003)]
项目资助者	National Key Research & Development Program of China[2018YFA0404203] ; National Natural Science Foundation of China[U1931204, U1738122, 11761131007, 11673060, 11433004] ; International Partnership Program of Chinese Academy of Sciences[114332KYSB20170008] ; Top Talents Program of Yunnan Province ; Natural Science Foundation of Yunnan Province[2016FB003, 2018FY001(-003)]
语种	英语
学科领域	天文学 ; 天体物理学 ; 高能天体物理学
文章类型	Article
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
出版地	20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN	1674-4527
URL	查看原文
WOS记录号	WOS:000529928600001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	SUPERNOVA REMNANT ; A SUPERNOVA ; 3-DIMENSIONAL STRUCTURE ; X-RAY ; COLLAPSE ; CORE
CSCD记录号	CSCD:6721350
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/23147
专题	高能天体物理研究组中国科学院天体结构与演化重点实验室
通讯作者	Yang CY(杨初源)
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China 3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100101, China 4.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, China 5.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210033, China
第一作者单位	中国科学院云南天文台
通讯作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Yang CY,Bao Bi-Wen,Liu Si-Ming. MHD simulations of inward shocks in Cassiopeia A[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2020,20(4):5.
APA	Yang CY,Bao Bi-Wen,&Liu Si-Ming.(2020).MHD simulations of inward shocks in Cassiopeia A.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,20(4),5.
MLA	Yang CY,et al."MHD simulations of inward shocks in Cassiopeia A".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 20.4(2020):5.

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