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DC Field | Value | Language |
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dc.citation.number | 1 | - |
dc.citation.startPage | 3 | - |
dc.citation.title | ASTROPHYSICAL JOURNAL | - |
dc.citation.volume | 911 | - |
dc.contributor.author | Di Gennaro, G. | - |
dc.contributor.author | van Weeren, R. J. | - |
dc.contributor.author | Rudnick, L. | - |
dc.contributor.author | Hoeft, M. | - |
dc.contributor.author | Brueggen, M. | - |
dc.contributor.author | Ryu, Dongsu | - |
dc.contributor.author | Rottgering, H. J. A. | - |
dc.contributor.author | Forman, W. | - |
dc.contributor.author | Stroe, A. | - |
dc.contributor.author | Shimwell, T. W. | - |
dc.contributor.author | Kraft, R. P. | - |
dc.contributor.author | Jones, C. | - |
dc.contributor.author | Hoang, D. N. | - |
dc.date.accessioned | 2023-12-21T16:07:32Z | - |
dc.date.available | 2023-12-21T16:07:32Z | - |
dc.date.created | 2021-04-19 | - |
dc.date.issued | 2021-04 | - |
dc.description.abstract | Radio relics are elongated sources related to shocks driven by galaxy cluster merger events. Although these objects are highly polarized at GHz frequencies (greater than or similar to 20%), high-resolution studies of their polarization properties are still lacking. We present the first high-resolution and high-sensitivity polarimetry study of the merging galaxy cluster CIZA J2242.8+5301 in the 1-4 GHz frequency band. We use the QU-fitting approach to model the Stokes I, Q, and U emission, obtaining best-fit intrinsic polarization fraction (p(0)), intrinsic polarization angle (chi(0)), rotation measure (RM), and wavelength-dependent depolarization (sigma(RM)) maps of the cluster. Our analysis focuses on the northern relic (RN). For the first time in a radio relic, we observe a decreasing polarization fraction in the downstream region. Our findings are possibly explained by geometrical projections and/or by decreasing of the magnetic field anisotropy toward the cluster center. From the amount of depolarization of the only detected background radio galaxy, we estimate a turbulent magnetic field strength of B-turb similar to 5.6 mu G in the relic. Finally, we observe RM fluctuations of about 30 rad m(-2) around the median value of 140.8 rad m(-2) at the relic position. | - |
dc.identifier.bibliographicCitation | ASTROPHYSICAL JOURNAL, v.911, no.1, pp.3 | - |
dc.identifier.doi | 10.3847/1538-4357/abe620 | - |
dc.identifier.issn | 0004-637X | - |
dc.identifier.scopusid | 2-s2.0-85104679988 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/52733 | - |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/abe620 | - |
dc.identifier.wosid | 000638159000001 | - |
dc.language | 영어 | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.title | Downstream Depolarization in the Sausage Relic: A 1-4 GHz Very Large Array Study | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Astronomy & Astrophysics | - |
dc.relation.journalResearchArea | Astronomy & Astrophysics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Galaxy clusters | - |
dc.subject.keywordAuthor | Galactic and extragalactic astronomy | - |
dc.subject.keywordAuthor | Polarimetry | - |
dc.subject.keywordAuthor | Intracluster medium | - |
dc.subject.keywordAuthor | Shocks | - |
dc.subject.keywordAuthor | Plasma astrophysics | - |
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