A long-lived compact jet in the black hole X-ray binary candidate AT2019wey

doi:10.1051/0004-6361/202142241

	A long-lived compact jet in the black hole X-ray binary candidate AT2019wey
	Cao, Hong-Min1 ; Migliori, Giulia 2; Giroletti, Marcello 2; Frey, Sandor 3,4; Yang, Jun5 ; Gabanyi, Krisztina E.3,6,7; Cui, Lang8 ; An, Tao 9; Hong, Xiao-Yu 9; Zhang, Wen-Da 10
	2022-01-19
Source Publication	ASTRONOMY & ASTROPHYSICS
ISSN	0004-6361
Volume	657 Pages:A104
Contribution Rank	8
Abstract	AT2019wey is a transient discovered by the Asteroid Terrestrial-impact Last Alert System survey in December of 2019. Follow-up optical, radio, and X-ray observations led to classification of this source as a Galactic black hole X-ray binary candidate. We carried out one-epoch 6.7 GHz European Very Long Baseline Interferometry Network and two-epoch multi-frequency (1.6, 4.5, 6.7 GHz) Very Long Baseline Array observations within a year after its discovery. These observations reveal a fading and flat-spectrum radio source with no discernible motion. These features suggest the detection of a compact jet. The source appears resolved at milliarcsecond scales, and the source angular size versus frequency trend is consistent with scatter broadening. This allows us to constrain the lower limit of the source distance to 6 kpc if the scattering medium is in a Galactic spiral arm. For a source location at greater than 3 kpc, the estimated upper limit of the peculiar velocity suggests the asymmetric natal kick may have occurred during the black hole formation stage.
Keyword	stars individual AT2019wey ISM jets and outflows X-rays binaries
DOI	10.1051/0004-6361/202142241
Indexed By	SCI
Language	英语
WOS Keyword	ACTIVE GALACTIC NUCLEI ; RELATIVISTIC JETS ; VLBI OBSERVATIONS ; RADIO ; EJECTION ; GALAXY ; STATE
Funding Project	EVN project[RSC07] ; National Natural Science Foundation of China[U2031116] ; National Natural Science Foundation of China[U1731103] ; National Research, Development and Innovation Office[OTKAK134213] ; National Research, Development and Innovation Office[2018-2.1.14-TET-CN-2018-00001]
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:000744244200001
Publisher	EDP SCIENCES S A
Funding Organization	EVN project ; National Natural Science Foundation of China ; National Research, Development and Innovation Office
Citation statistics	Cited Times:2[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/4468
Collection	射电天文研究室_星系宇宙学研究团组
Corresponding Author	Cao, Hong-Min
Affiliation	1.Shangqiu Normal Univ, Sch Elect & Elect Engn, 298 Wenhua Rd, Shangqiu 476000, Henan, Peoples R China 2.INAF Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy 3.ELKH Res Ctr Astron & Earth Sci, Konkoly Observ, Konkoly Thege Mikles Ut 15-17, H-1121 Budapest, Hungary 4.Eotvos Lorand Univ, Inst Phys, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary 5.Chalmers Univ Technol, Dept Space Earth & Environm, Onsala Space Observ, S-43992 Onsala, Sweden 6.Eotvos Lorand Univ, Inst Geog & Earth Sci, Dept Astron, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary 7.Eotvos Lorand Univ, ELKH ELTE Extragalact Astrophys Res Grp, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary 8.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 9.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Radio Astron, 80 Nandan Rd, Shanghai 200030, Peoples R China 10.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China
Recommended Citation GB/T 7714	Cao, Hong-Min,Migliori, Giulia,Giroletti, Marcello,et al. A long-lived compact jet in the black hole X-ray binary candidate AT2019wey[J]. ASTRONOMY & ASTROPHYSICS,2022,657:A104.
APA	Cao, Hong-Min.,Migliori, Giulia.,Giroletti, Marcello.,Frey, Sandor.,Yang, Jun.,...&Zhang, Wen-Da.(2022).A long-lived compact jet in the black hole X-ray binary candidate AT2019wey.ASTRONOMY & ASTROPHYSICS,657,A104.
MLA	Cao, Hong-Min,et al."A long-lived compact jet in the black hole X-ray binary candidate AT2019wey".ASTRONOMY & ASTROPHYSICS 657(2022):A104.

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