On the diffuse soft X-ray emission from the nuclear region of M51

	On the diffuse soft X-ray emission from the nuclear region of M51
	Liu, Ji-Ren1 ; Mao, Shu-De1,2,3,4
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2015-12-01
卷号	15 期号:12 页码:2164-2172
关键词	atomic processes plasmas ISM: jets and outflows galaxies: Seyfert galaxies: individual: M51 (NGC 5194) X-rays: ISM
英文摘要	We present an analysis of the diffuse soft X-ray emission from the nuclear region of M51 combining both XMM-Newton RGS and Chandra data. Most of the RGS spectrum of M51 can be fitted with a thermal model with a temperature of similar to 0.5 keV except for the 0 VII triplet, which is forbidden-line dominated. The Fe L-shell lines peak around the southern cloud, where the 0 VIII and N vu Ly alpha lines also peak. In contrast, the peak of the 0 vu forbidden line is about 10 '' offset from that of the other lines, indicating that it is from a spatially distinct component. The spatial distribution of the O VII triplet mapped by the Chandra data shows that most of the O VII triplet flux is located at faint regions near edges, instead of the southern cloud where other lines peak. This distribution of the 0 VII triplet is inconsistent with the photoionization model. Other mechanisms that could produce the anomalous O VII triplet, including a recombining plasma and charge exchange X-ray emission, are discussed.
收录类别	SCI
语种	英语
WOS记录号	WOS:000367563300004
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5463]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 3.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China 4.Univ Manchester, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England
推荐引用方式 GB/T 7714	Liu, Ji-Ren,Mao, Shu-De. On the diffuse soft X-ray emission from the nuclear region of M51[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2015,15(12):2164-2172.
APA	Liu, Ji-Ren,&Mao, Shu-De.(2015).On the diffuse soft X-ray emission from the nuclear region of M51.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,15(12),2164-2172.
MLA	Liu, Ji-Ren,et al."On the diffuse soft X-ray emission from the nuclear region of M51".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 15.12(2015):2164-2172.