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Seeing the forest a...
Seeing the forest and the trees: A radio investigation of the ULIRG Mrk 273
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- Kukreti, P. (författare)
- Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen
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- Morganti, R. (författare)
- Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen
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- Bondi, M. (författare)
- Istituto di Radioastronomia
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- Oosterloo, T. (författare)
- Rijksuniversiteit Groningen,University of Groningen,Netherlands Institute for Radio Astronomy (ASTRON)
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- Tadhunter, C. (författare)
- University of Sheffield
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- Morabito, L. (författare)
- Durham University
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- Adams, E. A.K. (författare)
- Rijksuniversiteit Groningen,University of Groningen,Netherlands Institute for Radio Astronomy (ASTRON)
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- Adebahr, B. (författare)
- Ruhr-Universität Bochum
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- de Blok, W.J.G. (författare)
- University of Cape Town,Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen
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- De Gasperin, F. (författare)
- Istituto di Radioastronomia,Universität Hamburg,University of Hamburg
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- Drabent, A. (författare)
- Thüringer Landessternwarte Tautenburg
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- Hess, K. M. (författare)
- Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen,Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)
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- Ivashina, Marianna, 1975 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Kutkin, A. M. (författare)
- Russian Academy of Sciences,Netherlands Institute for Radio Astronomy (ASTRON)
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- Mika, (författare)
- Netherlands Institute for Radio Astronomy (ASTRON)
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- Oostrum, L. C. (författare)
- Netherlands eScience Center,Netherlands Institute for Radio Astronomy (ASTRON)
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- Shimwell, T. W. (författare)
- Universiteit Leiden (UL),Leiden University (UL),Netherlands Institute for Radio Astronomy (ASTRON)
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- van der Hulst, J. M. (författare)
- Rijksuniversiteit Groningen,University of Groningen
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- van Leeuwen, J. (författare)
- Netherlands Institute for Radio Astronomy (ASTRON)
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- van Weeren, R. (författare)
- Universiteit Leiden (UL),Leiden University (UL)
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- Vohl, D. (författare)
- Anton Pannekoek Institute for Astronomy
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- Ziemke, J. (författare)
- Netherlands Institute for Radio Astronomy (ASTRON),Universitetet i Oslo,University of Oslo
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(creator_code:org_t)
- 2022-08-03
- 2022
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 664
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Galaxy mergers have been observed to trigger nuclear activity by feeding gas to the central supermassive black hole. One such class of objects are Ultra Luminous InfraRed Galaxies (ULIRGs), which are mostly late stage major mergers of gas-rich galaxies. Recently, large-scale (100 kpc) radio continuum emission has been detected in a select number of ULIRGs, all of which also harbour powerful Active Galactic Nuclei (AGN). This hints at the presence of large-scale radio emission being evidence for nuclear activity. Exploring the origin of this radio emission and its link to nuclear activity requires high sensitivity multi-frequency data. We present such an analysis of the ULIRG Mrk 273. Using the International LOFAR telescope (ILT), we detected spectacular large-scale arcs in this system. This detection includes, for the first time, a giant 190 kpc arc in the north. We propose these arcs are fuelled by a low power radio AGN triggered by the merger. We also identified a bright 45 kpc radio ridge, which is likely related to the ionised gas nebula in that region. We combined this with high sensitivity data from APERture Tile In Focus (Apertif) and archival data from the Very Large Array (VLA) to explore the spectral properties. The ILT simultaneously allowed us to probe the nucleus at a resolution of 0.3, where we detected three components, and, for the first time, diffuse emission around these components. Combining this with archival high frequency VLA images of the nucleus allowed us to detect absorption in one component, and a steep spectrum radio AGN in another. We then extrapolate from this case study to the importance of investigating the presence of radio emission in more ULIRGs and what it can tell us about the link between mergers and the presence of radio activity.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Data- och informationsvetenskap -- Bioinformatik (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Bioinformatics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- Radio continuum: galaxies
- Galaxies: individual: Mrk 273
- Galaxies: active
- Galaxies: interactions
- Techniques: high angular resolution
- Galaxies: jets
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Till lärosätets databas
- Av författaren/redakt...
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Kukreti, P.
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Morganti, R.
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Bondi, M.
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Oosterloo, T.
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Tadhunter, C.
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Morabito, L.
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visa fler...
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Adams, E. A.K.
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Adebahr, B.
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de Blok, W.J.G.
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De Gasperin, F.
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Drabent, A.
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Hess, K. M.
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Ivashina, Marian ...
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Kutkin, A. M.
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Mika,
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Oostrum, L. C.
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Shimwell, T. W.
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van der Hulst, J ...
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van Leeuwen, J.
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van Weeren, R.
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Vohl, D.
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Ziemke, J.
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- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Astronomi astrof ...
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- NATURVETENSKAP
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NATURVETENSKAP
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och Data och informa ...
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och Bioinformatik
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Elektroteknik oc ...
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och Signalbehandling
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