Testing the radiatively inefficient accretion flow model for Sagittarius A* using the size measurements

	*Testing the radiatively inefficient accretion flow model for Sagittarius A using the size measurements**
	Yuan, F; Shen, ZQ ; Huang, L
刊名	ASTROPHYSICAL JOURNAL
	2006-05-01
卷号	642 期号:1 页码:L45-L48
关键词	accretion black hole physics galaxies : active Galaxy : center radiation mechanisms : nonthermal accretion disks
英文摘要	Recent radio observations by the Very Long Baseline Array at 7 and 3.5 mm produced the high-resolution images of the compact radio source located at the center of our Galaxy ( Sgr A) and detected its wavelength-dependent intrinsic sizes at the two wavelengths. This provides us with a good chance of testing previously proposed theoretical models for Sgr A. In this Letter, we calculate the size based on the radiatively inefficient accretion flow ( RIAF) model proposed by Yuan, Quataert, & Narayan. We find that after taking into account the scattering of the interstellar electrons, the predicted sizes are consistent with the observations. We further predict an image of Sgr A* at 1.3 mm that can be tested by future observations.
学科主题	星系和宇宙学研究中心
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	SUPERMASSIVE BLACK-HOLE ; GALACTIC-CENTER ; SGR-A ; RADIO-SOURCE ; GAMMA-RAYS ; MILKY-WAY ; JET ; EMISSION ; SPECTRUM ; GALAXY
收录类别	SCI
语种	英语
WOS记录号	WOS:000237206900012
公开日期	2010-11-08
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/12629]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.SHAO, Joint Inst Galaxy & Cosmol, Shanghai 200030, Peoples R China 3.USTC, Shanghai 200030, Peoples R China 4.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Yuan, F,Shen, ZQ,Huang, L. Testing the radiatively inefficient accretion flow model for Sagittarius A* using the size measurements[J]. ASTROPHYSICAL JOURNAL,2006,642(1):L45-L48.
APA	Yuan, F,Shen, ZQ,&Huang, L.(2006).Testing the radiatively inefficient accretion flow model for Sagittarius A* using the size measurements.ASTROPHYSICAL JOURNAL,642(1),L45-L48.
MLA	Yuan, F,et al."Testing the radiatively inefficient accretion flow model for Sagittarius A* using the size measurements".ASTROPHYSICAL JOURNAL 642.1(2006):L45-L48.