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A long-lived compac...
A long-lived compact jet in the black hole X-ray binary candidate AT2019wey
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- Cao, Hong Min (author)
- Shangqiu Normal University
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- Migliori, Giulia (author)
- Istituto di Radioastronomia
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- Giroletti, M. (author)
- Istituto di Radioastronomia
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- Frey, Sándor (author)
- Eötvös Loránd University (ELTE),Magyar Tudomanyos Akademia,Hungarian Academy of Sciences
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- Yang, Jun, 1979 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Gabányi, Krisztina E. (author)
- Magyar Tudomanyos Akademia,Hungarian Academy of Sciences,Eötvös Loránd University (ELTE)
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- Cui, Lang (author)
- Chinese Academy of Sciences
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- An, T. (author)
- Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences
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- Hong, X. Y. (author)
- Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences
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- Zhang, Wen Da (author)
- Chinese Academy of Sciences
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(creator_code:org_t)
- 2022-01-19
- 2022
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 657
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Abstract
Subject headings
Close
- 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.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)
Keyword
- Stars: individual: AT2019wey
- X-rays: binaries
- ISM: jets and outflows
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Cao, Hong Min
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Migliori, Giulia
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Giroletti, M.
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Frey, Sándor
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Yang, Jun, 1979
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Gabányi, Kriszti ...
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show more...
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Cui, Lang
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An, T.
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Hong, X. Y.
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Zhang, Wen Da
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Geophysics
- Articles in the publication
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Astronomy and As ...
- By the university
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Chalmers University of Technology