A low-frequency radio halo survey of the South Pole Telescope SZ-selected clusters with the GMRT
The presence of non-thermal electrons and large scale magnetic fields in the intra-cluster medium (ICM) is known through the detection of mega-parsec (Mpc) scale diffuse radio synchrotron emission. Although a significant amount of progress in finding new diffuse radio sources has happened in the las...
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ftdatacite:10.48550/arxiv.2011.01652 2023-05-15T18:22:45+02:00 A low-frequency radio halo survey of the South Pole Telescope SZ-selected clusters with the GMRT Raja, Ramij Rahaman, Majidul Datta, Abhirup van Weeren, Reinout J. Intema, Huib T. Paul, Surajit 2020 https://dx.doi.org/10.48550/arxiv.2011.01652 https://arxiv.org/abs/2011.01652 unknown arXiv https://dx.doi.org/10.1093/mnras/staa3432 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ High Energy Astrophysical Phenomena astro-ph.HE FOS Physical sciences article-journal Article ScholarlyArticle Text 2020 ftdatacite https://doi.org/10.48550/arxiv.2011.01652 https://doi.org/10.1093/mnras/staa3432 2022-03-10T15:01:19Z The presence of non-thermal electrons and large scale magnetic fields in the intra-cluster medium (ICM) is known through the detection of mega-parsec (Mpc) scale diffuse radio synchrotron emission. Although a significant amount of progress in finding new diffuse radio sources has happened in the last decade, most of the investigation has been constrained towards massive low-redshift clusters. In this work, we explore clusters with redshift $z>0.3$ in search of diffuse radio emission, at 325 MHz with the Giant Metrewave Radio Telescope (GMRT). This campaign has resulted in the discovery of 2 new radio halos (SPT-CL J0013-4906 and SPT-CL J0304-4401) along with 2 other detections (SPT-CL J2031-4037 and SPT-CL J2248-4431), previously reported (at 325 MHz) in the literature. In addition, we detect a halo candidate in 1 cluster in our sample, and upper limits for halos are placed in 8 clusters where no diffuse emission is detected. In the $P_{1.4} - L_\mathrm{X}$ plane, the detected halos follow the observed correlation, whereas the upper limits lie above the correlation line, indicating the possibility of future detection with sensitive observations. : 15 pages, 10 figures; Accepted for publication in MNRAS Article in Journal/Newspaper South pole DataCite Metadata Store (German National Library of Science and Technology) South Pole |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
High Energy Astrophysical Phenomena astro-ph.HE FOS Physical sciences |
spellingShingle |
High Energy Astrophysical Phenomena astro-ph.HE FOS Physical sciences Raja, Ramij Rahaman, Majidul Datta, Abhirup van Weeren, Reinout J. Intema, Huib T. Paul, Surajit A low-frequency radio halo survey of the South Pole Telescope SZ-selected clusters with the GMRT |
topic_facet |
High Energy Astrophysical Phenomena astro-ph.HE FOS Physical sciences |
description |
The presence of non-thermal electrons and large scale magnetic fields in the intra-cluster medium (ICM) is known through the detection of mega-parsec (Mpc) scale diffuse radio synchrotron emission. Although a significant amount of progress in finding new diffuse radio sources has happened in the last decade, most of the investigation has been constrained towards massive low-redshift clusters. In this work, we explore clusters with redshift $z>0.3$ in search of diffuse radio emission, at 325 MHz with the Giant Metrewave Radio Telescope (GMRT). This campaign has resulted in the discovery of 2 new radio halos (SPT-CL J0013-4906 and SPT-CL J0304-4401) along with 2 other detections (SPT-CL J2031-4037 and SPT-CL J2248-4431), previously reported (at 325 MHz) in the literature. In addition, we detect a halo candidate in 1 cluster in our sample, and upper limits for halos are placed in 8 clusters where no diffuse emission is detected. In the $P_{1.4} - L_\mathrm{X}$ plane, the detected halos follow the observed correlation, whereas the upper limits lie above the correlation line, indicating the possibility of future detection with sensitive observations. : 15 pages, 10 figures; Accepted for publication in MNRAS |
format |
Article in Journal/Newspaper |
author |
Raja, Ramij Rahaman, Majidul Datta, Abhirup van Weeren, Reinout J. Intema, Huib T. Paul, Surajit |
author_facet |
Raja, Ramij Rahaman, Majidul Datta, Abhirup van Weeren, Reinout J. Intema, Huib T. Paul, Surajit |
author_sort |
Raja, Ramij |
title |
A low-frequency radio halo survey of the South Pole Telescope SZ-selected clusters with the GMRT |
title_short |
A low-frequency radio halo survey of the South Pole Telescope SZ-selected clusters with the GMRT |
title_full |
A low-frequency radio halo survey of the South Pole Telescope SZ-selected clusters with the GMRT |
title_fullStr |
A low-frequency radio halo survey of the South Pole Telescope SZ-selected clusters with the GMRT |
title_full_unstemmed |
A low-frequency radio halo survey of the South Pole Telescope SZ-selected clusters with the GMRT |
title_sort |
low-frequency radio halo survey of the south pole telescope sz-selected clusters with the gmrt |
publisher |
arXiv |
publishDate |
2020 |
url |
https://dx.doi.org/10.48550/arxiv.2011.01652 https://arxiv.org/abs/2011.01652 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
https://dx.doi.org/10.1093/mnras/staa3432 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.2011.01652 https://doi.org/10.1093/mnras/staa3432 |
_version_ |
1766202163907788800 |