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Exploring the prope...
Exploring the properties of low-frequency radio emission and magnetic fields in a sample of compact galaxy groups using the LOFAR Two-Metre Sky Survey (LoTSS)
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- Nikiel-Wroczynski, N. (author)
- Jagiellonian University in Kraków, Poland
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- Berger, A. (author)
- Ruhr-Universität Bochum
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- Herrera Ruiz, N. (author)
- Ruhr-Universität Bochum
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- Bomans, D. (author)
- Ruhr-Universität Bochum
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- Blex, S. (author)
- Ruhr-Universität Bochum
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- Horellou, Cathy, 1967 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Paladino, R. (author)
- Istituto nazionale di astrofisica (INAF)
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- Becker, A. (author)
- Ruhr-Universität Bochum
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- Miskolczi, A. (author)
- Ruhr-Universität Bochum
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- Beck, R. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Chy, K. T. (author)
- Jagiellonian University in Kraków, Poland
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- Dettmar, R. -J. (author)
- Ruhr-Universität Bochum
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- Heald, G. (author)
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)
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- Heesen, V. (author)
- Universität Hamburg,University of Hamburg
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- Jamrozy, M. (author)
- Jagiellonian University in Kraków, Poland
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- Shimwell, T. W. (author)
- Netherlands Institute for Radio Astronomy (ASTRON)
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- Tasse, C. (author)
- Paris Diderot University, France
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(creator_code:org_t)
- 2019-02-19
- 2019
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 622
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Abstract
Subject headings
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- We use the LOFAR Two-metre Sky Survey (LoTSS) Data Release I to identify the groups of galaxies (and individual galaxies) from the Hickson compact groups (HCG) and magnitude-limited compact groups (MLCG) samples that emit at the frequency of 150 MHz, characterise their radio emission (extended or limited to the galaxies), and compare new results to earlier observations and theoretical predictions. The detection of 73 systems (and 7 more - probably) out of 120, of which as many as 17 show the presence of extended radio structures, confirms the previous hypothesis of the common character of the magnetic field inside galaxy groups and its detectability. In order to investigate the future potential of low-frequency radio studies of galaxy groups, we also present a more detailed insight into four radio-emitting systems, for which the strength of the magnetic field inside their intergalactic medium (IGM) is calculated. The estimated values are comparable to that found inside star-forming galaxies, suggesting a dynamical and evolutionary importance of the magnetic field in galaxy groups.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinsk bioteknologi -- Biomedicinsk laboratorievetenskap/teknologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Medical Biotechnology -- Biomedical Laboratory Science/Technology (hsv//eng)
Keyword
- Galaxies: groups: general
- Galaxies: magnetic fields
- Radio continuum: galaxies
- Magnetic fields
Publication and Content Type
- art (subject category)
- ref (subject category)
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Nikiel-Wroczynsk ...
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Berger, A.
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Herrera Ruiz, N.
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Bomans, D.
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Blex, S.
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Horellou, Cathy, ...
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show more...
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Paladino, R.
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Becker, A.
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Miskolczi, A.
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Beck, R.
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Chy, K. T.
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Dettmar, R. -J.
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Heald, G.
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Heesen, V.
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Jamrozy, M.
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Shimwell, T. W.
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Tasse, C.
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show less...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
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MEDICAL AND HEAL ...
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and Medical Biotechn ...
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and Biomedical Labor ...
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Chalmers University of Technology