Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32360
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ge, Chong | en_US |
dc.contributor.author | Liu, Ruo-Yu | en_US |
dc.contributor.author | Sun, Ming | en_US |
dc.contributor.author | Yu, Heng | en_US |
dc.contributor.author | Rudnick, Lawrence | en_US |
dc.contributor.author | Eilek, Jean | en_US |
dc.contributor.author | Owen, Frazer | en_US |
dc.contributor.author | Dasadia, Sarthak | en_US |
dc.contributor.author | ROSSETTI, MARIACHIARA | en_US |
dc.contributor.author | Markevitch, Maxim | en_US |
dc.contributor.author | Clarke, Tracy E. | en_US |
dc.contributor.author | Jones, Thomas W. | en_US |
dc.contributor.author | GHIZZARDI, SIMONA | en_US |
dc.contributor.author | VENTURI, Tiziana | en_US |
dc.contributor.author | Finoguenov, Alexis | en_US |
dc.contributor.author | Eckert, Dominique | en_US |
dc.date.accessioned | 2022-06-16T14:36:18Z | - |
dc.date.available | 2022-06-16T14:36:18Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32360 | - |
dc.description.abstract | We present the results of deep Chandra and XMM-Newton observations of a complex merging galaxy cluster Abell 2256 (A2256) that hosts a spectacular radio relic (RR). The temperature and metallicity maps show clear evidence of a merger between the western subcluster (SC) and the primary cluster (PC). We detect five X-ray surface brightness edges. Three of them near the cluster centre are cold fronts (CFs): CF1 is associated with the infalling SC; CF2 is located in the east of the PC; and CF3 is located to the west of the PC core. The other two edges at cluster outskirts are shock fronts (SFs): SF1 near the RR in the NW has Mach numbers derived from the temperature and the density jumps, respectively, of M<SUB>T</SUB> = 1.62 ± 0.12 and M<SUB>ρ</SUB> = 1.23 ± 0.06; SF2 in the SE has M<SUB>T</SUB> = 1.54 ± 0.05 and M<SUB>ρ</SUB> = 1.16 ± 0.13. In the region of the RR, there is no evidence for the correlation between X-ray and radio substructures, from which we estimate an upper limit for the inverse-Compton emission, and therefore set a lower limit on the magnetic field (˜ 450 kpc from PC centre) of B > 1.0 μG for a single power-law electron spectrum or B > 0.4 μG for a broken power-law electron spectrum. We propose a merger scenario including a PC, an SC, and a group. Our merger scenario accounts for the X-ray edges, diffuse radio features, and galaxy kinematics, as well as projection effects. | en_US |
dc.language.iso | eng | en_US |
dc.title | Chandra and XMM-Newton observations of A2256: cold fronts, merger shocks, and constraint on the IC emission | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/staa2320 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/497/4/4704/5892576 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 497 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 4704 | en_US |
dc.relation.lastpage | 4717 | en_US |
dc.relation.numberofpages | 13 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 16 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | USA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2020MNRAS.497.4704G | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering | 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.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairetype | Article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | IRA Bologna | - |
crisitem.author.orcid | 0000-0002-9775-732X | - |
crisitem.author.orcid | 0000-0003-0879-7328 | - |
crisitem.author.orcid | 0000-0002-8476-6307 | - |
Appears in Collections: | 1.01 Articoli in rivista |
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File | Description | Size | Format | |
---|---|---|---|---|
ge2020_a2256.pdf | Pdf editoriale | 7.14 MB | Adobe PDF | View/Open |
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