Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/28939
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Giacintucci, S. | en_US |
dc.contributor.author | Markevitch, M. | en_US |
dc.contributor.author | CASSANO, Rossella | en_US |
dc.contributor.author | VENTURI, Tiziana | en_US |
dc.contributor.author | Clarke, T.E. | en_US |
dc.contributor.author | Kale, R. | en_US |
dc.contributor.author | Cuciti, V. | en_US |
dc.date.accessioned | 2020-12-17T13:56:58Z | - |
dc.date.available | 2020-12-17T13:56:58Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28939 | - |
dc.description.abstract | Radio minihalos are diffuse synchrotron sources of unknown origin found in the cool cores of some galaxy clusters. We use GMRT and VLA data to expand the sample of minihalos by reporting three new minihalo detections (A2667, A907, and PSZ1 G139.61+24.20) and confirming minihalos in five clusters (MACS J0159.8-0849, MACS J0329.6-0211, RXC J2129.6+0005, AS 780, and A3444). With these new detections and confirmations, the sample now stands at 23, the largest sample to date. For consistency, we also reanalyze archival VLA 1.4 GHz observations of seven known minihalos. We revisit possible correlations between the nonthermal emission and the thermal properties of their cluster hosts. Consistent with our earlier findings from a smaller sample, we find no strong relation between the minihalo radio luminosity and the total cluster mass. Instead, we find a strong positive correlation between the minihalo radio power and X-ray bolometric luminosity of the cool core (r < 70 kpc). This supplements our earlier result that most, if not all, cool cores in massive clusters contain a minihalo. Comparison of radio and Chandra X-ray images indicates that the minihalo emission is typically confined by concentric sloshing cold fronts in the cores of most of our clusters, supporting the hypothesis that minihalos arise from electron reacceleration by turbulence caused by core gas sloshing. Taken together, our findings suggest that the origin of minihalos should be closely related to the properties of thermal plasma in cluster cool cores. | en_US |
dc.language.iso | eng | en_US |
dc.title | Expanding the Sample of Radio Minihalos in Galaxy Clusters | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/ab29f1 | en_US |
dc.identifier.scopus | 2-s2.0-85071912740 | en_US |
dc.identifier.isi | 000478777600004 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/ab29f1 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 880 | en_US |
dc.relation.firstpage | 70 | en_US |
dc.relation.lastpage | 94 | en_US |
dc.relation.numberofpages | 25 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 7 | en_US |
dc.description.international | sì | 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...880...70G | 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.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.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0003-4046-0637 | - |
crisitem.author.orcid | 0000-0002-8476-6307 | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
Giacintucci_2019_ApJ_880_70.pdf | pdf editoriale | 8.57 MB | Adobe PDF | Visualizza/apri |
Page view(s)
44
controllato il 8-mag-2024
Download(s)
36
controllato il 8-mag-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.