X-RAY SPECTRAL AND TEMPORAL ANALYSIS OF NARROW LINE SEYFERT 1 GALAXY WAS 61

	X-RAY SPECTRAL AND TEMPORAL ANALYSIS OF NARROW LINE SEYFERT 1 GALAXY WAS 61
	Dou, Liming 1; Wang, Ting-Gui 1; Ai, Yanli 2; Yuan, Weimin3 ; Zhou, Hongyan 1,4; Dong, Xiao-Bo 1,5,6
刊名	ASTROPHYSICAL JOURNAL
	2016-03-10
卷号	819 期号:2
关键词	galaxies: active galaxies: individual (Was 61) galaxies: Seyfert X-rays: galaxies
英文摘要	We present an analysis of spectrum and variability of the bright reddened narrow line Seyfert 1 galaxy Was. 61 using 90 ks archival XMM-Newton data. The X-ray spectrum in 0.2-10 keV can be characterized by an absorbed power-law plus soft excess and an Fe. K alpha emission line. The power-law spectral index remains constant during the flux variation. The absorbing material is mildly ionized, with a column density of 3.2 x 10(21) cm(-2), and does not appear to vary during the period of the X-ray observation. If the same material causes the optical reddening (E(B-V) similar or equal to 0.6 mag), it must be located. outside the narrow line region with a dust-to-gas ratio similar to the average Galactic value. We detect significant variations of the Fe. K alpha line during the observational period. A broad Fe. Ka line at. 6.7 keV with a width of similar to 0.6 keV is detected in the low flux segment of the first 40 ks exposure, and is absent in the spectra of other segments; a narrow Fe. K alpha emission line similar to 6.4 keV with a width of similar to 0.1 keV is observed in the subsequent 20 ks segment, which has a count rate 35% higher and is in the next day. We believe this is due to the change in geometry and kinematics of the X-ray emitting corona. The temperature and flux of soft X-ray excess appear to correlate with the flux of the hard power-law component. Comptonization of disc photons by a warm and optically thick inner disk is preferred to interpret the soft excess, rather than the ionized reflection.
收录类别	SCI
语种	英语
WOS记录号	WOS:000372305700079
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5411]
专题	国家天文台_空间科学研究部
作者单位	1.Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China 2.Sun Yat Sen Univ, Sch Phys & Astron, Guangzhou 510275, Guangdong, Peoples R China 3.Chinese Acad Sci, Div Space Sci, Natl Astron Observ, Beijing 100012, Peoples R China 4.Polar Res Inst China, Jinqiao Rd 451, Shanghai 200136, Peoples R China 5.Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China 6.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Dou, Liming,Wang, Ting-Gui,Ai, Yanli,et al. X-RAY SPECTRAL AND TEMPORAL ANALYSIS OF NARROW LINE SEYFERT 1 GALAXY WAS 61[J]. ASTROPHYSICAL JOURNAL,2016,819(2).
APA	Dou, Liming,Wang, Ting-Gui,Ai, Yanli,Yuan, Weimin,Zhou, Hongyan,&Dong, Xiao-Bo.(2016).X-RAY SPECTRAL AND TEMPORAL ANALYSIS OF NARROW LINE SEYFERT 1 GALAXY WAS 61.ASTROPHYSICAL JOURNAL,819(2).
MLA	Dou, Liming,et al."X-RAY SPECTRAL AND TEMPORAL ANALYSIS OF NARROW LINE SEYFERT 1 GALAXY WAS 61".ASTROPHYSICAL JOURNAL 819.2(2016).