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CONSTRAINING THE FLARING REGION OF SAGITTARIUS A* BY 1.3 mm VLBI MEASUREMENTS
Huang, Lei1,2; Shen, Zhi-Qiang1,2; Gao, Feng1,3
2012-02-01
Source PublicationASTROPHYSICAL JOURNAL LETTERS
Volume745Issue:2
AbstractWe use a model of an accretion flow coupled with an emergent flare to interpret the latest 1.3 mm very long baseline interferometry (VLBI) measurements for Sagittarius A*. The visibility data constrained the distances from the flare center to the black hole center as d(EW) less than or similar to 20 R-g and d(NS) less than or similar to 80 R-g in the east-west and north-south directions, respectively. If interpreted by the hot-spot model, the flare was preferred to pass in front of the black hole at a radius much larger than d(EW). If interpreted by the episodic jet launched from a nearly edge-on hot accretion flow, the flare was preferred to be ejected with theta(j) greater than or similar to 40. off the black hole rotating axis. This method can be generalized to help us understand future submillimeter VLBI observations and study the millimeter/submillimeter variabilities in the vicinity of the Galactic center supermassive black hole.
KeywordGalaxy: Center Submillimeter: General
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/2041-8205/745/2/L20
WOS KeywordSUPERMASSIVE BLACK-HOLE ; GALACTIC-CENTER ; ACCRETION FLOW ; SGR-A ; MILLIMETER-VLBI ; HORIZON ; SIMULATIONS ; EMISSION ; MODELS ; MILKY
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000300228800005
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15550
Collection暗物质和空间天文实验室
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Beijing 100864, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Huang, Lei,Shen, Zhi-Qiang,Gao, Feng. CONSTRAINING THE FLARING REGION OF SAGITTARIUS A* BY 1.3 mm VLBI MEASUREMENTS[J]. ASTROPHYSICAL JOURNAL LETTERS,2012,745(2).
APA Huang, Lei,Shen, Zhi-Qiang,&Gao, Feng.(2012).CONSTRAINING THE FLARING REGION OF SAGITTARIUS A* BY 1.3 mm VLBI MEASUREMENTS.ASTROPHYSICAL JOURNAL LETTERS,745(2).
MLA Huang, Lei,et al."CONSTRAINING THE FLARING REGION OF SAGITTARIUS A* BY 1.3 mm VLBI MEASUREMENTS".ASTROPHYSICAL JOURNAL LETTERS 745.2(2012).
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