CHEX-MATE: A LOFAR pilot X-ray – radio study on five radio halo clusters
The connection between the thermal and non-thermal properties in galaxy clusters hosting radio halos seems fairly well established. However, a comprehensive analysis of such a connection has only been done for integrated quantities (e.g. L X − P radio relation). In recent years, new-generation rad...
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creator | Balboni, M. Gastaldello, F. Bonafede, A. Botteon, A. Bartalucci, I. Bourdin, H. Brunetti, G. Cassano, R. De Grandi, S. De Luca, F. Ettori, S. Ghizzardi, S. Gitti, M. Iqbal, A. Johnston-Hollitt, M. Lovisari, L. Mazzotta, P. Molendi, S. Pointecouteau, E. Pratt, G. W. Riva, G. Rossetti, M. Rottgering, H. Sereno, M. van Weeren, R. J. Venturi, T. Veronesi, I. |
description | The connection between the thermal and non-thermal properties in galaxy clusters hosting radio halos seems fairly well established. However, a comprehensive analysis of such a connection has only been done for integrated quantities (e.g.
L
X
−
P
radio
relation). In recent years, new-generation radio telescopes have enabled the unprecedented possibility to study the non-thermal properties of galaxy clusters on a spatially resolved basis. In this work, we performed a pilot study to investigate the mentioned properties on five targets by combining X-ray data from the CHEX-MATE project with the second data release from the LOFAR Two meter Sky survey. We find a strong correlation (
r
s
∼ 0.7) with a slope less than unity between the radio and X-ray surface brightness. We also report differences in the spatially resolved properties of the radio emission in clusters that show different levels of dynamical disturbance. In particular, less perturbed clusters (according to X-ray parameters) show peaked radio profiles in the centre, with a flattening in the outer regions, while the three dynamically disturbed clusters have steeper profiles in the outer regions. We fitted a model to the radio emission in the context of turbulent re-acceleration with a constant ratio between thermal and non-thermal particles’ energy densities and a magnetic field profile linked to the thermal gas density as
B
(
r
) ∝
n
th
0.5
. We found that this simple model cannot reproduce the behaviour of the observed radio emission. |
doi_str_mv | 10.1051/0004-6361/202347965 |
format | Article |
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L
X
−
P
radio
relation). In recent years, new-generation radio telescopes have enabled the unprecedented possibility to study the non-thermal properties of galaxy clusters on a spatially resolved basis. In this work, we performed a pilot study to investigate the mentioned properties on five targets by combining X-ray data from the CHEX-MATE project with the second data release from the LOFAR Two meter Sky survey. We find a strong correlation (
r
s
∼ 0.7) with a slope less than unity between the radio and X-ray surface brightness. We also report differences in the spatially resolved properties of the radio emission in clusters that show different levels of dynamical disturbance. In particular, less perturbed clusters (according to X-ray parameters) show peaked radio profiles in the centre, with a flattening in the outer regions, while the three dynamically disturbed clusters have steeper profiles in the outer regions. We fitted a model to the radio emission in the context of turbulent re-acceleration with a constant ratio between thermal and non-thermal particles’ energy densities and a magnetic field profile linked to the thermal gas density as
B
(
r
) ∝
n
th
0.5
. We found that this simple model cannot reproduce the behaviour of the observed radio emission.</description><identifier>ISSN: 0004-6361</identifier><identifier>EISSN: 1432-0746</identifier><identifier>EISSN: 1432-0756</identifier><identifier>DOI: 10.1051/0004-6361/202347965</identifier><language>eng</language><publisher>Heidelberg: EDP Sciences</publisher><subject>Astrophysics ; Galactic clusters ; Galactic halos ; Gas density ; LOFAR ; Physics ; Radio astronomy ; Radio emission ; Radio telescopes ; Sky surveys (astronomy) ; Surface brightness ; Thermodynamic properties ; X-ray astronomy</subject><ispartof>Astronomy and astrophysics (Berlin), 2024-06, Vol.686, p.A5</ispartof><rights>2024. This work is licensed under https://creativecommons.org/licenses/by/4.0 (the “License”). Notwithstanding the ProQuest Terms and conditions, you may use this content in accordance with the terms of the License.</rights><rights>Attribution</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c286t-a4cec901e8738239a080fd3487d136f47fadb90fd2d3c0a78104ab6fb72589183</citedby><cites>FETCH-LOGICAL-c286t-a4cec901e8738239a080fd3487d136f47fadb90fd2d3c0a78104ab6fb72589183</cites><orcidid>0000-0002-9775-732X ; 0009-0001-3048-0020 ; 0000-0002-9325-1567 ; 0000-0003-0302-0325 ; 0000-0003-4117-8617 ; 0000-0002-9112-0184 ; 0000-0002-6385-8501</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,3714,27901,27902</link.rule.ids><backlink>$$Uhttps://hal.science/hal-04919205$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Balboni, M.</creatorcontrib><creatorcontrib>Gastaldello, F.</creatorcontrib><creatorcontrib>Bonafede, A.</creatorcontrib><creatorcontrib>Botteon, A.</creatorcontrib><creatorcontrib>Bartalucci, I.</creatorcontrib><creatorcontrib>Bourdin, H.</creatorcontrib><creatorcontrib>Brunetti, G.</creatorcontrib><creatorcontrib>Cassano, R.</creatorcontrib><creatorcontrib>De Grandi, S.</creatorcontrib><creatorcontrib>De Luca, F.</creatorcontrib><creatorcontrib>Ettori, S.</creatorcontrib><creatorcontrib>Ghizzardi, S.</creatorcontrib><creatorcontrib>Gitti, M.</creatorcontrib><creatorcontrib>Iqbal, A.</creatorcontrib><creatorcontrib>Johnston-Hollitt, M.</creatorcontrib><creatorcontrib>Lovisari, L.</creatorcontrib><creatorcontrib>Mazzotta, P.</creatorcontrib><creatorcontrib>Molendi, S.</creatorcontrib><creatorcontrib>Pointecouteau, E.</creatorcontrib><creatorcontrib>Pratt, G. W.</creatorcontrib><creatorcontrib>Riva, G.</creatorcontrib><creatorcontrib>Rossetti, M.</creatorcontrib><creatorcontrib>Rottgering, H.</creatorcontrib><creatorcontrib>Sereno, M.</creatorcontrib><creatorcontrib>van Weeren, R. J.</creatorcontrib><creatorcontrib>Venturi, T.</creatorcontrib><creatorcontrib>Veronesi, I.</creatorcontrib><title>CHEX-MATE: A LOFAR pilot X-ray – radio study on five radio halo clusters</title><title>Astronomy and astrophysics (Berlin)</title><description>The connection between the thermal and non-thermal properties in galaxy clusters hosting radio halos seems fairly well established. However, a comprehensive analysis of such a connection has only been done for integrated quantities (e.g.
L
X
−
P
radio
relation). In recent years, new-generation radio telescopes have enabled the unprecedented possibility to study the non-thermal properties of galaxy clusters on a spatially resolved basis. In this work, we performed a pilot study to investigate the mentioned properties on five targets by combining X-ray data from the CHEX-MATE project with the second data release from the LOFAR Two meter Sky survey. We find a strong correlation (
r
s
∼ 0.7) with a slope less than unity between the radio and X-ray surface brightness. We also report differences in the spatially resolved properties of the radio emission in clusters that show different levels of dynamical disturbance. In particular, less perturbed clusters (according to X-ray parameters) show peaked radio profiles in the centre, with a flattening in the outer regions, while the three dynamically disturbed clusters have steeper profiles in the outer regions. We fitted a model to the radio emission in the context of turbulent re-acceleration with a constant ratio between thermal and non-thermal particles’ energy densities and a magnetic field profile linked to the thermal gas density as
B
(
r
) ∝
n
th
0.5
. We found that this simple model cannot reproduce the behaviour of the observed radio emission.</description><subject>Astrophysics</subject><subject>Galactic clusters</subject><subject>Galactic halos</subject><subject>Gas density</subject><subject>LOFAR</subject><subject>Physics</subject><subject>Radio astronomy</subject><subject>Radio emission</subject><subject>Radio telescopes</subject><subject>Sky surveys (astronomy)</subject><subject>Surface brightness</subject><subject>Thermodynamic properties</subject><subject>X-ray astronomy</subject><issn>0004-6361</issn><issn>1432-0746</issn><issn>1432-0756</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNo9kMtKw0AUhgdRsFafwM2AKxexZy6Zi7tQelEiBanQ3TDNBVNip84khe58B9_QJzGhpavD-fn4z-FD6J7AE4GYjACAR4IJMqJAGZdaxBdoQDijEUguLtHgTFyjmxA23UqJYgP0Op5PVtFbspw84wSni2nyjndV7Rq8irw94L-fX-xtXjkcmjY_YLfFZbUvTtmnrR3O6jY0hQ-36Kq0dSjuTnOIPqaT5XgepYvZyzhJo4wq0USWZ0WmgRRKMkWZtqCgzBlXMidMlFyWNl_rLqI5y8BKRYDbtSjXksZKd08P0eOxt7tudr76sv5gnK3MPElNnwHXRFOI96RjH47szrvvtgiN2bjWb7v3DAOhY62EhI5iRyrzLgRflOdaAqYXbHp9ptdnzoLZP6G4agg</recordid><startdate>20240601</startdate><enddate>20240601</enddate><creator>Balboni, M.</creator><creator>Gastaldello, F.</creator><creator>Bonafede, A.</creator><creator>Botteon, A.</creator><creator>Bartalucci, I.</creator><creator>Bourdin, H.</creator><creator>Brunetti, G.</creator><creator>Cassano, R.</creator><creator>De Grandi, S.</creator><creator>De Luca, F.</creator><creator>Ettori, S.</creator><creator>Ghizzardi, S.</creator><creator>Gitti, M.</creator><creator>Iqbal, A.</creator><creator>Johnston-Hollitt, M.</creator><creator>Lovisari, L.</creator><creator>Mazzotta, P.</creator><creator>Molendi, S.</creator><creator>Pointecouteau, E.</creator><creator>Pratt, G. W.</creator><creator>Riva, G.</creator><creator>Rossetti, M.</creator><creator>Rottgering, H.</creator><creator>Sereno, M.</creator><creator>van Weeren, R. J.</creator><creator>Venturi, T.</creator><creator>Veronesi, I.</creator><general>EDP Sciences</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0002-9775-732X</orcidid><orcidid>https://orcid.org/0009-0001-3048-0020</orcidid><orcidid>https://orcid.org/0000-0002-9325-1567</orcidid><orcidid>https://orcid.org/0000-0003-0302-0325</orcidid><orcidid>https://orcid.org/0000-0003-4117-8617</orcidid><orcidid>https://orcid.org/0000-0002-9112-0184</orcidid><orcidid>https://orcid.org/0000-0002-6385-8501</orcidid></search><sort><creationdate>20240601</creationdate><title>CHEX-MATE: A LOFAR pilot X-ray – radio study on five radio halo clusters</title><author>Balboni, M. ; Gastaldello, F. ; Bonafede, A. ; Botteon, A. ; Bartalucci, I. ; Bourdin, H. ; Brunetti, G. ; Cassano, R. ; De Grandi, S. ; De Luca, F. ; Ettori, S. ; Ghizzardi, S. ; Gitti, M. ; Iqbal, A. ; Johnston-Hollitt, M. ; Lovisari, L. ; Mazzotta, P. ; Molendi, S. ; Pointecouteau, E. ; Pratt, G. W. ; Riva, G. ; Rossetti, M. ; Rottgering, H. ; Sereno, M. ; van Weeren, R. J. ; Venturi, T. ; Veronesi, I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c286t-a4cec901e8738239a080fd3487d136f47fadb90fd2d3c0a78104ab6fb72589183</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Astrophysics</topic><topic>Galactic clusters</topic><topic>Galactic halos</topic><topic>Gas density</topic><topic>LOFAR</topic><topic>Physics</topic><topic>Radio astronomy</topic><topic>Radio emission</topic><topic>Radio telescopes</topic><topic>Sky surveys (astronomy)</topic><topic>Surface brightness</topic><topic>Thermodynamic properties</topic><topic>X-ray astronomy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Balboni, M.</creatorcontrib><creatorcontrib>Gastaldello, F.</creatorcontrib><creatorcontrib>Bonafede, A.</creatorcontrib><creatorcontrib>Botteon, A.</creatorcontrib><creatorcontrib>Bartalucci, I.</creatorcontrib><creatorcontrib>Bourdin, H.</creatorcontrib><creatorcontrib>Brunetti, G.</creatorcontrib><creatorcontrib>Cassano, R.</creatorcontrib><creatorcontrib>De Grandi, S.</creatorcontrib><creatorcontrib>De Luca, F.</creatorcontrib><creatorcontrib>Ettori, S.</creatorcontrib><creatorcontrib>Ghizzardi, S.</creatorcontrib><creatorcontrib>Gitti, M.</creatorcontrib><creatorcontrib>Iqbal, A.</creatorcontrib><creatorcontrib>Johnston-Hollitt, M.</creatorcontrib><creatorcontrib>Lovisari, L.</creatorcontrib><creatorcontrib>Mazzotta, P.</creatorcontrib><creatorcontrib>Molendi, S.</creatorcontrib><creatorcontrib>Pointecouteau, E.</creatorcontrib><creatorcontrib>Pratt, G. W.</creatorcontrib><creatorcontrib>Riva, G.</creatorcontrib><creatorcontrib>Rossetti, M.</creatorcontrib><creatorcontrib>Rottgering, H.</creatorcontrib><creatorcontrib>Sereno, M.</creatorcontrib><creatorcontrib>van Weeren, R. J.</creatorcontrib><creatorcontrib>Venturi, T.</creatorcontrib><creatorcontrib>Veronesi, I.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Astronomy and astrophysics (Berlin)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Balboni, M.</au><au>Gastaldello, F.</au><au>Bonafede, A.</au><au>Botteon, A.</au><au>Bartalucci, I.</au><au>Bourdin, H.</au><au>Brunetti, G.</au><au>Cassano, R.</au><au>De Grandi, S.</au><au>De Luca, F.</au><au>Ettori, S.</au><au>Ghizzardi, S.</au><au>Gitti, M.</au><au>Iqbal, A.</au><au>Johnston-Hollitt, M.</au><au>Lovisari, L.</au><au>Mazzotta, P.</au><au>Molendi, S.</au><au>Pointecouteau, E.</au><au>Pratt, G. W.</au><au>Riva, G.</au><au>Rossetti, M.</au><au>Rottgering, H.</au><au>Sereno, M.</au><au>van Weeren, R. J.</au><au>Venturi, T.</au><au>Veronesi, I.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>CHEX-MATE: A LOFAR pilot X-ray – radio study on five radio halo clusters</atitle><jtitle>Astronomy and astrophysics (Berlin)</jtitle><date>2024-06-01</date><risdate>2024</risdate><volume>686</volume><spage>A5</spage><pages>A5-</pages><issn>0004-6361</issn><eissn>1432-0746</eissn><eissn>1432-0756</eissn><abstract>The connection between the thermal and non-thermal properties in galaxy clusters hosting radio halos seems fairly well established. However, a comprehensive analysis of such a connection has only been done for integrated quantities (e.g.
L
X
−
P
radio
relation). In recent years, new-generation radio telescopes have enabled the unprecedented possibility to study the non-thermal properties of galaxy clusters on a spatially resolved basis. In this work, we performed a pilot study to investigate the mentioned properties on five targets by combining X-ray data from the CHEX-MATE project with the second data release from the LOFAR Two meter Sky survey. We find a strong correlation (
r
s
∼ 0.7) with a slope less than unity between the radio and X-ray surface brightness. We also report differences in the spatially resolved properties of the radio emission in clusters that show different levels of dynamical disturbance. In particular, less perturbed clusters (according to X-ray parameters) show peaked radio profiles in the centre, with a flattening in the outer regions, while the three dynamically disturbed clusters have steeper profiles in the outer regions. We fitted a model to the radio emission in the context of turbulent re-acceleration with a constant ratio between thermal and non-thermal particles’ energy densities and a magnetic field profile linked to the thermal gas density as
B
(
r
) ∝
n
th
0.5
. We found that this simple model cannot reproduce the behaviour of the observed radio emission.</abstract><cop>Heidelberg</cop><pub>EDP Sciences</pub><doi>10.1051/0004-6361/202347965</doi><orcidid>https://orcid.org/0000-0002-9775-732X</orcidid><orcidid>https://orcid.org/0009-0001-3048-0020</orcidid><orcidid>https://orcid.org/0000-0002-9325-1567</orcidid><orcidid>https://orcid.org/0000-0003-0302-0325</orcidid><orcidid>https://orcid.org/0000-0003-4117-8617</orcidid><orcidid>https://orcid.org/0000-0002-9112-0184</orcidid><orcidid>https://orcid.org/0000-0002-6385-8501</orcidid><oa>free_for_read</oa></addata></record> |
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source | Bacon EDP Sciences France Licence nationale-ISTEX-PS-Journals-PFISTEX; EDP Sciences; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
subjects | Astrophysics Galactic clusters Galactic halos Gas density LOFAR Physics Radio astronomy Radio emission Radio telescopes Sky surveys (astronomy) Surface brightness Thermodynamic properties X-ray astronomy |
title | CHEX-MATE: A LOFAR pilot X-ray – radio study on five radio halo clusters |
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