Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31584
DC Field | Value | Language |
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dc.contributor.author | TOMEI, NICCOLO' | en_US |
dc.contributor.author | Del Zanna, Luca | en_US |
dc.contributor.author | Bugli, Matteo | en_US |
dc.contributor.author | BUCCIANTINI, NICCOLO' | en_US |
dc.date.accessioned | 2022-03-15T14:49:44Z | - |
dc.date.available | 2022-03-15T14:49:44Z | - |
dc.date.issued | 2021 | en_US |
dc.identifier.issn | 2218-1997 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31584 | - |
dc.description.abstract | The remarkable results by the Event Horizon Telescope collaboration concerning the emission from M87* and, more recently, its polarization properties, require an increasingly accurate modeling of the plasma flows around the accreting black hole. Radiatively inefficient sources such as M87* and Sgr A* are typically modeled with the SANE (standard and normal evolution) paradigm, if the accretion dynamics is smooth, or with the MAD (magnetically arrested disk) paradigm, if the black hole's magnetosphere reacts by halting the accretion sporadically, resulting in a highly dynamical process. While the recent polarization studies seem to favor MAD models, this may not be true for all sources, and SANE accretion surely still deserves attention. In this work, we investigate the possibility of reaching the typical degree of magnetization and other accretion properties expected for SANE disks by resorting to the mean-field dynamo process in axisymmetric GRMHD simulations, which are supposed to mimic the amplifying action of an unresolved magnetorotational instability-driven turbulence. We show that it is possible to reproduce the main diagnostics present in the literature by starting from very unfavorable initial configurations, such as a purely toroidal magnetic field with negligible magnetization. | en_US |
dc.language.iso | eng | en_US |
dc.title | Are GRMHD Mean-Field Dynamo Models of Thick Accretion Disks SANE? | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3390/universe7080259 | en_US |
dc.identifier.scopus | 2-s2.0-85111457590 | en_US |
dc.identifier.isi | WOS:000689888600001 | en_US |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85111457590 | en_US |
dc.identifier.url | https://www.mdpi.com/2218-1997/7/8/259 | en_US |
dc.relation.medium | ELETTRONICO | en_US |
dc.relation.volume | 7 | en_US |
dc.relation.issue | 8 | en_US |
dc.relation.firstpage | 259 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 4 | en_US |
dc.description.international | no | en_US |
dc.contributor.country | ITA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | UNIVERSE | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2021Univ....7..259T | 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 | 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 | O.A. Arcetri | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.orcid | 0000-0002-8848-1392 | - |
crisitem.journal.journalissn | 2218-1997 | - |
crisitem.journal.ance | E230956 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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universe-07-00259(1).pdf | Pdf editoriale | 1.5 MB | Adobe PDF | View/Open |
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