Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32155
DC Field | Value | Language |
---|---|---|
dc.contributor.author | BALDI, RANIERI DIEGO | en_US |
dc.contributor.author | Gabriele Giovannini | en_US |
dc.contributor.author | Alessandro Capetti | en_US |
dc.date.accessioned | 2022-06-01T12:28:11Z | - |
dc.date.available | 2022-06-01T12:28:11Z | - |
dc.date.issued | 2021 | en_US |
dc.identifier.issn | 2075-4434 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32155 | - |
dc.description.abstract | We present the results from high-resolution observations carried out with the eMERLIN UK-array and the European VLBI network (EVN) for a sample of 15 FR0s, i.e. compact core-dominated radio sources associated with nearby early-type galaxies (ETGs) which represent the bulk of the local radio galaxy population. The 5-GHz eMERLIN observations available for 5 objects exhibit sub-mJy core components, and reveal pc-scale twin jets for 4 out of 5 FR0s once the eMERLIN and JVLA archival visibilities data are combined. The 1.66-GHz EVN observations available for 10 FR0s display one- and two-sided jetted morphologies and compact cores. The pc-scale core emission contributes, on average, to about one tenth of the total extended radio emission, although we note a increasing core contribution for flat/inverted-spectrum sources. We found an unprecedented linear correlation between the pc-scale core luminosity ($\sim$10$^{21.3}$-10$^{23.6}$ W Hz$^{-1}$) and [O III] line luminosity, generally considered as proxy of the accretion power, for a large sample of LINER-type radio-loud low-luminosity active nuclei, all hosted in massive ETGs, which include FR0s and FRIs. This result represents further evidence of a common jet-disc coupling in FR0s and FRIs, despite they differ in kpc-scale radio structure. For our objects and for other FR0 samples reported in the literature, we estimate the jet brightness sidedness ratios, which typically range between 1 and 3. This parameter roughly gauges the jet bulk Lorentz factor $\Gamma$, which turns out to range between 1 and 2.5 for most of the sample. This corroborates the scenario that FR0s are characterized by mildly-relativistic jets, possibly as a result of lower spinning black holes (BHs) than the highly-spinning BHs of relativistic-jetted radio galaxies, FRIs. | en_US |
dc.language.iso | eng | en_US |
dc.title | The eMERLIN and EVN view of FR0 radio galaxies | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3390/galaxies9040106 | en_US |
dc.identifier.url | http://arxiv.org/abs/2111.09899v1 | en_US |
dc.identifier.url | https://www.mdpi.com/2075-4434/9/4/106 | en_US |
dc.relation.medium | ELETTRONICO | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | GALAXIES | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2021Galax...9..106B | 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.orcid | 0000-0002-1824-0411 | - |
crisitem.journal.journalissn | 2075-4434 | - |
crisitem.journal.ance | E222261 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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Galaxies 2021 9 106.pdf | PDF editoriale | 8.48 MB | Adobe PDF | View/Open |
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