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http://hdl.handle.net/20.500.12386/28506
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Punsly, Brian | en_US |
dc.contributor.author | MARZIANI, Paola | en_US |
dc.contributor.author | Bennert, Vardha N. | en_US |
dc.contributor.author | Nagai, Hiroshi | en_US |
dc.contributor.author | Gurwell, Mark A. | en_US |
dc.date.accessioned | 2020-11-24T14:12:58Z | - |
dc.date.available | 2020-11-24T14:12:58Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28506 | - |
dc.description.abstract | NGC 1275 is one of the most conspicuous active galactic nuclei (AGN) in the local universe. The radio jet currently emits a flux density of ∼10 Jy at ∼1 mm wavelengths, down from the historic high of ∼65 Jy in 1980. Yet, the nature of the AGN in NGC 1275 is still controversial. It has been debated whether this is a broad emission line (BEL) Seyfert galaxy, an obscured Seyfert galaxy, a narrow line radio galaxy, or a BL Lac object. We clearly demonstrate a persistent Hβ BEL over the last 35 yr with a full width at half maximum (FWHM) of 4150-6000 km s<SUP>-1</SUP>. We also find a prominent Pα BEL (FWHM ≈ 4770 km s<SUP>-1</SUP>) and a weak C IV BEL (FWHM ≈ 4000 km s<SUP>-1</SUP>), Hβ/C IV ≈ 2. A far-UV Hubble Space Telescope observation during suppressed jet activity reveals a low luminosity continuum. The Hβ BEL luminosity is typical of broad line Seyfert galaxies with similar far-UV luminosity. X-ray observations indicate a softer ionizing continuum than what would be expected for a broad line Seyfert galaxy with similar far-UV luminosity. This is the opposite of the expectation of advection-dominated accretion. The AGN continuum appears to be thermal emission from a low luminosity, optically thick, accretion flow with a low Eddington ratio, ∼0.0001. The soft, weak, ionizing continuum is consistent with the relatively weak C IV BEL. Evidence that the BEL luminosity is correlated with the jet millimeter-wave luminosity is presented. It appears that the accretion rate regulates jet power. | en_US |
dc.language.iso | eng | en_US |
dc.title | Revealing the Broad Line Region of NGC 1275: The Relationship to Jet Power | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/aaec75 | en_US |
dc.identifier.scopus | 2-s2.0-85059866421 | en_US |
dc.identifier.isi | 000454073700014 | en_US |
dc.identifier.url | https://arxiv.org/pdf/1810.11716.pdf | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/aaec75 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 869 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 143 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | USA | 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 | 2018ApJ...869..143P | 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.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.orcid | 0000-0002-6058-4912 | - |
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Punsly_2018_ApJ_869_143.pdf | Pdf editoriale | 1.12 MB | Adobe PDF | Visualizza/apri |
1810.11716.pdf | postprint | 1.16 MB | Adobe PDF | Visualizza/apri |
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