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A parsec-scale radi...
A parsec-scale radio jet launched by the central intermediate-mass black hole in the dwarf galaxy SDSS J090613.77+561015.2
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- Yang, Jun, 1979 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Gurvits, Leonid I. (författare)
- Commonwealth Scientific and Industrial Research Organisation (CSIRO),Technische Universiteit Delft,Delft University of Technology (TU Delft),Joint Institute for VLBI in Europe (JIVE)
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- Paragi, Zsolt (författare)
- Joint Institute for VLBI in Europe (JIVE)
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- Frey, S. (författare)
- Konkoly Observatory,Eötvös Loránd University (ELTE)
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- Conway, John, 1963 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Liu, Xiang (författare)
- Chinese Academy of Sciences
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- Cui, Lang (författare)
- Chinese Academy of Sciences
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(creator_code:org_t)
- 2020-04-07
- 2020
- Engelska.
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Ingår i: Monthly Notices of the Royal Astronomical Society: Letters. - : Oxford University Press (OUP). - 1745-3925 .- 1745-3933. ; 495:1, s. L71-L75
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Abstract
Ämnesord
Stäng
- The population of intermediate-mass black holes (IMBHs) in nearby dwarf galaxies plays an important 'ground truth' role in exploring black hole formation and growth in the early Universe. In the dwarf elliptical galaxy SDSS J090613.77+561015.2 (z = 0.0465), an accreting IMBH has been revealed by optical and X-ray observations. Aiming to search for possible radio core and jet associated with the IMBH, we carried out very long baseline interferometry (VLBI) observations with the European VLBI Network at 1.66 GHz. Our imaging results show that there are two 1-mJy components with a separation of about 52 mas (projected distance 47 pc) and themore compact component is located within the 1s error circle of the optical centroid from available Gaia astrometry. Based on their positions, elongated structures and relatively high brightness temperatures, as well as the absence of star-forming activity in the host galaxy, we argue that the radio morphology originates from the jet activity powered by the central IMBH. The existence of the large-scale jet implies that violent jet activity might occur in the early epochs of black hole growth and thus help to regulate the co-evolution of black holes and galaxies.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- galaxies: individual: SDSS J090613.77+561015.2
- galaxies: active
- galaxies: jets
- galaxies: dwarf
- radio continuum: galaxies
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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