Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/30456
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Domínguez-Fernández, P. | en_US |
dc.contributor.author | VAZZA, FRANCO | en_US |
dc.contributor.author | Brüggen, M. | en_US |
dc.contributor.author | BRUNETTI, GIANFRANCO | en_US |
dc.date.accessioned | 2021-02-18T13:43:08Z | - |
dc.date.available | 2021-02-18T13:43:08Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/30456 | - |
dc.description.abstract | We investigate the evolution of magnetic fields in galaxy clusters starting from constant primordial fields using highly resolved ({≈ } 4 kpc) cosmological (magnetohydrodynamic) MHD simulations. The magnetic fields in our sample exhibit amplification via a small-scale dynamo and compression during structure formation. In particular, we study how the spectral properties of magnetic fields are affected by mergers, and we relate the measured magnetic energy spectra to the dynamical evolution of the intracluster medium. The magnetic energy grows by a factor of ∼40-50 in a time span of ∼9 Gyr and equipartition between kinetic and magnetic energy occurs on a range of scales (< 160 kpc at all epochs) depending on the turbulence state of the system. We also find that, in general, the outer scale of the magnetic field and the MHD scale are not simply correlated in time. The effect of major mergers is to shift the peak magnetic spectra to smaller scales, whereas the magnetic amplification only starts after ≲1 Gyr. In contrast, continuous minor mergers promote the steady growth of the magnetic field. We discuss the implications of these findings in the interpretation of future radio observations of galaxy clusters. | en_US |
dc.language.iso | eng | en_US |
dc.title | Dynamical evolution of magnetic fields in the intracluster medium | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz877 | en_US |
dc.identifier.scopus | 2-s2.0-85068397130 | en_US |
dc.identifier.isi | 000474894100049 | en_US |
dc.identifier.url | https://academic.oup.com/mnrasl/article/495/1/L112/5822792 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 486 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 623 | en_US |
dc.relation.lastpage | 638 | en_US |
dc.type.referee | REF_1 | 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 | 2019MNRAS.486..623D | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_6 Stars and stellar systems | 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 | IRA Bologna | - |
crisitem.author.orcid | 0000-0002-2821-7928 | - |
crisitem.author.orcid | 0000-0003-4195-8613 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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1903.11052.pdf | 2.89 MB | Adobe PDF | View/Open | |
slaa066.pdf | PDF editoriale | 2.1 MB | Adobe PDF | View/Open |
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