X-RAY ABSORPTION BY THE WARM-HOT INTERGALACTIC MEDIUM IN THE HERCULES SUPERCLUSTER

CORC > 厦门大学 > 化学化工－已发表论文

	X-RAY ABSORPTION BY THE WARM-HOT INTERGALACTIC MEDIUM IN THE HERCULES SUPERCLUSTER
	Ren, Bin ; Fang, Taotao ; Buote, David A. ; Ren B(任斌) ; Fang TT(方陶陶)
刊名	http://dx.doi.org/10.1088/2041-8205/782/1/L6
	2014-02-10
关键词	ULTRAVIOLET-SPECTROSCOPIC-EXPLORER O-VI ABSORPTION CHANDRA DETECTION OVI ABSORPTION LOCAL GROUP LY-ALPHA PHYSICAL-PROPERTIES BARYONIC CONTENT SCULPTOR WALL LINE SYSTEMS
英文摘要	National Natural Science Foundation of China [11243001, 11273021]; Fundamental Research Funds for the Central Universities [2013121008]; Missing baryons, in the form of warm-hot intergalactic medium (WHIM), are expected to reside in cosmic filamentary structures that can be traced by signposts such as large-scale galaxy superstructures. The clear detection of an X-ray absorption line in the Sculptor Wall demonstrated the success of using galaxy superstructures as a signpost to search for the WHIM. Here we present an XMM-Newton Reflection Grating Spectrometer observation of the blazar Mkn 501, located in the Hercules Supercluster. We detected an O VII K alpha absorption line at the 98.7% level (2.5 sigma) at the redshift of the foreground Hercules Supercluster. The derived properties of the absorber are consistent with theoretical expectations of the WHIM. We discuss the implication of our detection for the search for the " missing baryons." While this detection shows again that using signposts is a very effective strategy to search for the WHIM, follow-up observations are crucial both to strengthen the statistical significance of the detection and to rule out other interpretations. A local, z similar to 0 O VII K alpha absorption line was also clearly detected at the 4 sigma level, and we discuss its implications for our understanding of the hot gas content of our Galaxy.
语种	英语
出版者	IOP PUBLISHING LTD
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89389]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Ren, Bin,Fang, Taotao,Buote, David A.,et al. X-RAY ABSORPTION BY THE WARM-HOT INTERGALACTIC MEDIUM IN THE HERCULES SUPERCLUSTER[J]. http://dx.doi.org/10.1088/2041-8205/782/1/L6,2014.
APA	Ren, Bin,Fang, Taotao,Buote, David A.,任斌,&方陶陶.(2014).X-RAY ABSORPTION BY THE WARM-HOT INTERGALACTIC MEDIUM IN THE HERCULES SUPERCLUSTER.http://dx.doi.org/10.1088/2041-8205/782/1/L6.
MLA	Ren, Bin,et al."X-RAY ABSORPTION BY THE WARM-HOT INTERGALACTIC MEDIUM IN THE HERCULES SUPERCLUSTER".http://dx.doi.org/10.1088/2041-8205/782/1/L6 (2014).