Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/30467
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Di Gennaro, G. | en_US |
dc.contributor.author | van Weeren, R. J. | en_US |
dc.contributor.author | Andrade-Santos, F. | en_US |
dc.contributor.author | Akamatsu, H. | en_US |
dc.contributor.author | Randall, S. W. | en_US |
dc.contributor.author | Forman, W. | en_US |
dc.contributor.author | Kraft, R. P. | en_US |
dc.contributor.author | BRUNETTI, GIANFRANCO | en_US |
dc.contributor.author | Dawson, W. A. | en_US |
dc.contributor.author | Golovich, N. | en_US |
dc.contributor.author | Jones, C. | en_US |
dc.date.accessioned | 2021-02-18T17:07:12Z | - |
dc.date.available | 2021-02-18T17:07:12Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/30467 | - |
dc.description.abstract | We present the results from new deep Chandra (∼410 ks) and Suzaku (∼180 ks) observations of the merging galaxy cluster ZwCl 0008.8+5215 (z = 0.104). Previous radio observations revealed the presence of a double radio relic located diametrically west and east of the cluster center. Using our new Chandra data, we find evidence for the presence of a shock at the location of the western relic, RW, with a Mach number {{ \mathcal M }}{SX}={1.48}-0.32+0.50 from the density jump. We also measure {{ \mathcal M }}{TX}={2.35}-0.55+0.74 and {{ \mathcal M }}{TX}={2.02}-0.47+0.74 from the temperature jump, with Chandra and Suzaku, respectively. These values are consistent with the Mach number estimate from a previous study of the radio spectral index, under the assumption of diffusive shock acceleration ({{ \mathcal M }}RW}={2.4}-0.2+0.4). Interestingly, the western radio relic does not entirely trace the X-ray shock. A possible explanation is that the relic traces fossil plasma from nearby radio galaxies that is reaccelerated at the shock. For the eastern relic we do not detect an X-ray surface brightness discontinuity, despite the fact that radio observations suggest a shock with {{ \mathcal M }}RE}={2.2}-0.1+0.2. The low surface brightness and reduced integration time for this region might have prevented the detection. The Chandra surface brightness profile suggests { \mathcal M }≲ 1.5, while the Suzaku temperature measurements found {{ \mathcal M }}{TX}={1.54}-0.47+0.65. Finally, we also detect a merger-induced cold front on the western side of the cluster, behind the shock that traces the western relic. | en_US |
dc.language.iso | eng | en_US |
dc.title | Evidence for a Merger-induced Shock Wave in ZwCl 0008.8+5215 with Chandra and Suzaku | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/ab03cd | en_US |
dc.identifier.scopus | 2-s2.0-85063592428 | en_US |
dc.identifier.isi | 000460449000011 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/ab03cd | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 873 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 64 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019ApJ...873...64D | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | IRA Bologna | - |
crisitem.author.orcid | 0000-0003-4195-8613 | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
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