BASS XXXVII: The Role of Radiative Feedback in the Growth and Obscuration Properties of Nearby Supermassive Black Holes

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dc.contributor.authorRicci, C.
dc.contributor.authorAnanna, T. T.
dc.contributor.authorTemple, M. J.
dc.contributor.authorUrry, C. M.
dc.contributor.authorKoss, M. J.
dc.contributor.authorTrakhtenbrot, B.
dc.contributor.authorUeda, Y.
dc.contributor.authorStern, D.
dc.contributor.authorBauer, F. E.
dc.contributor.authorTreister, E.
dc.contributor.authorPrivon, G. C.
dc.contributor.authorOh, K.
dc.contributor.authorPaltani, S.
dc.contributor.authorStalevski, M.
dc.contributor.authorHo, L. C.
dc.contributor.authorFabian, A. C.
dc.contributor.authorMushotzky, R.
dc.contributor.authorChang, C. S.
dc.contributor.authorRicci, F.
dc.contributor.authorKakkad, D.
dc.contributor.authorSartori, L.
dc.contributor.authorBaer, R.
dc.contributor.authorCaglar, T.
dc.contributor.authorPowell, M.
dc.contributor.authorHarrison, F.
dc.date.accessioned2025-01-20T21:01:55Z
dc.date.available2025-01-20T21:01:55Z
dc.date.issued2022
dc.description.abstractWe study the relation between obscuration and supermassive black hole (SMBH) accretion using a large sample of hard X-ray selected active galactic nuclei (AGNs). We find a strong decrease in the fraction of obscured sources above the Eddington limit for dusty gas (log lambda(Edd) >= -2) confirming earlier results, and consistent with the radiation-regulated unification model. This also explains the difference in the Eddington ratio distribution functions (ERDFs) of type 1 and type 2 AGNs obtained by a recent study. The break in the ERDF of nearby AGNs is at log lambda*(Edd) = -1.34 +/- 0.07. This corresponds to the lambda(Edd) where AGNs transition from having most of their sky covered by obscuring material to being mostly devoid of absorbing material. A similar trend is observed for the luminosity function, which implies that most of the SMBH growth in the local universe happens when the AGN is covered by a large reservoir of gas and dust. These results could be explained with a radiation-regulated growth model, in which AGNs move in the N-H-lambda(Edd) plane during their life cycle. The growth episode starts with the AGN mostly unobscured and accreting at low lambda(Edd). As the SMBH is further fueled, lambda(Edd), N-H and the covering factor increase, leading the AGN to be preferentially observed as obscured. Once lambda(Edd) reaches the Eddington limit for dusty gas, the covering factor and N-H rapidly decrease, leading the AGN to be typically observed as unobscured. As the remaining fuel is depleted, the SMBH goes back into a quiescent phase.
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-4357/ac8e67
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.3847/1538-4357/ac8e67
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92980
dc.identifier.wosidWOS:000867377700001
dc.issue.numero1
dc.language.isoen
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.titleBASS XXXVII: The Role of Radiative Feedback in the Growth and Obscuration Properties of Nearby Supermassive Black Holes
dc.typeartículo
dc.volumen938
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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