THE WISE DETECTION OF AN INFRARED ECHO IN TIDAL DISRUPTION EVENT ASASSN-14li

doi:10.3847/2041-8205/828/1/L14

CORC > 上海天文台 > 中国科学院上海天文台

	THE WISE DETECTION OF AN INFRARED ECHO IN TIDAL DISRUPTION EVENT ASASSN-14li
	Jiang, Ning 3; Dou, Liming 3; Wang, Tinggui 3; Yang, Chenwei 3; Lyu, Jianwei 1; Zhou, Hongyan 2,3
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2016-09-01
卷号	828 期号:1
关键词	Galaxies: Active Galaxies: Individual (Asassn-14li) Galaxies: Nuclei
ISSN号	2041-8205
DOI	10.3847/2041-8205/828/1/L14
英文摘要	We report the detection of a significant infrared variability of the nearest tidal disruption event (TDE) ASASSN-14li using Wide-field Infrared Survey Explorer and newly released Near-Earth Object WISE Reactivation data. In comparison with the quiescent state, the infrared flux is brightened by 0.12 and 0.16 mag in the W1 (3.4 mu m) and W2 (4.6 mu m) bands at 36 days after the optical discovery (or similar to 110 days after the peak disruption date). The flux excess is still detectable similar to 170 days later. Assuming that the flare-like infrared emission is from the dust around the black hole, its blackbody temperature is estimated to be similar to 2.1 x 10(3) K, slightly higher than the dust sublimation temperature, indicating that the dust is likely located close to the dust sublimation radius. The equilibrium between the heating and radiation of the dust claims a bolometric luminosity of similar to 10(43) - 10(45) erg s(-1), comparable with the observed peak luminosity. This result has for the first time confirmed the detection of infrared emission from the dust echoes of TDEs.
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000383985500014
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32765]
专题	中国科学院上海天文台
通讯作者	Jiang, Ning
作者单位	1.Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA 2.Polar Res Inst China, 451 Jinqiao Rd, Shanghai 200136, Peoples R China 3.Univ Sci & Technol China, Chinese Acad Sci, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Ning,Dou, Liming,Wang, Tinggui,et al. THE WISE DETECTION OF AN INFRARED ECHO IN TIDAL DISRUPTION EVENT ASASSN-14li[J]. ASTROPHYSICAL JOURNAL LETTERS,2016,828(1).
APA	Jiang, Ning,Dou, Liming,Wang, Tinggui,Yang, Chenwei,Lyu, Jianwei,&Zhou, Hongyan.(2016).THE WISE DETECTION OF AN INFRARED ECHO IN TIDAL DISRUPTION EVENT ASASSN-14li.ASTROPHYSICAL JOURNAL LETTERS,828(1).
MLA	Jiang, Ning,et al."THE WISE DETECTION OF AN INFRARED ECHO IN TIDAL DISRUPTION EVENT ASASSN-14li".ASTROPHYSICAL JOURNAL LETTERS 828.1(2016).