Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31838
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Oh, Junghwan | en_US |
dc.contributor.author | Hodgson, Jeffrey A. | en_US |
dc.contributor.author | Trippe, Sascha | en_US |
dc.contributor.author | Krichbaum, Thomas P. | en_US |
dc.contributor.author | Kam, Minchul | en_US |
dc.contributor.author | Paraschos, Georgios Filippos | en_US |
dc.contributor.author | Kim, Jae-Young | en_US |
dc.contributor.author | Rani, Bindu | en_US |
dc.contributor.author | Sohn, Bong Won | en_US |
dc.contributor.author | Lee, Sang-Sung | en_US |
dc.contributor.author | LICO, Rocco | en_US |
dc.contributor.author | LIUZZO, Elisabetta Teodorina | en_US |
dc.contributor.author | Bremer, Michael | en_US |
dc.contributor.author | Zensus, Anton | en_US |
dc.date.accessioned | 2022-03-24T09:22:53Z | - |
dc.date.available | 2022-03-24T09:22:53Z | - |
dc.date.issued | 2022 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31838 | - |
dc.description.abstract | 3C 84 (NGC 1275) is the radio source at the centre of the Perseus cluster and exhibits a bright radio jet. We observed the source with the Global Millimeter VLBI Array (GMVA) between 2008 and 2015, with a typical angular resolution of ~50 $\mu$as. The observations revealed a consistent double nuclear structure separated by ~770 gravitational radii assuming a black hole mass of 3.2 × 10<SUP>8</SUP> M<SUB>⊙</SUB>. The region is likely too broad and bright to be the true jet base anchored in the accretion disc or black hole ergosphere. A cone and parabola were fit to the stacked (time averaged) image of the nuclear region. The data did not strongly prefer either fit, but combined with a jet/counter-jet ratio analysis, an upper limit on the viewing angle to the inner jet region of ≤35° was found. This provides evidence for a variation of the viewing angle along the jet (and therefore a bent jet) within ~0.5 pc of the jet launching region. In the case of a conical jet, the apex is located ~2400 gravitational radii upstream of the bright nuclear region and up to ~600 gravitational radii upstream in the parabolic case. We found a possible correlation between the brightness temperature and relative position angle of the double nuclear components, which may indicate rotation within the jet. | en_US |
dc.language.iso | eng | en_US |
dc.title | A persistent double nuclear structure in 3C 84 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stab3056 | en_US |
dc.identifier.scopus | 2-s2.0-85121241237 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/509/1/1024/6412543?login=true | en_US |
dc.identifier.url | http://arxiv.org/abs/2110.09811v1 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 509 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 1024 | en_US |
dc.relation.lastpage | 1035 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | 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 | 2022MNRAS.509.1024O | 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.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
item.cerifentitytype | Publications | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | IRA Bologna | - |
crisitem.author.orcid | 0000-0003-0995-5201 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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Oh_2022_MNRAS_509_1024_stab3056.pdf | Pdf editoriale | 4.67 MB | Adobe PDF | View/Open |
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