BASS. LIII. The Eddington Ratio as the Primary Regulator of the Fraction of X-Ray Emission in Active Galactic Nuclei

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dc.catalogadorgjm
dc.contributor.authorGupta, Kriti Kamal
dc.contributor.authorRicci, Claudio
dc.contributor.authorTortosa, Alessia
dc.contributor.authorTemple, Matthew J.
dc.contributor.authorKoss, Michael J.
dc.contributor.authorTrakhtenbrot, Benny
dc.contributor.authorBauer, Franz E.
dc.contributor.authorTreister, Ezequiel
dc.contributor.authorMushotzky, Richard
dc.contributor.authorKammoun, Elias
dc.contributor.authorPapadakis, Iossif
dc.contributor.authorOh, Kyuseok
dc.contributor.authorRojas, Alejandra
dc.contributor.authorChang, Chin-Shin
dc.contributor.authorDiaz, Yaherlyn
dc.contributor.authorJana, Arghajit
dc.contributor.authorKakkad, Darshan
dc.contributor.authorMoral Castro, Ignacio del
dc.contributor.authorPeca, Alessandro
dc.contributor.authorPowell, Meredith C.
dc.contributor.authorStern, Daniel
dc.contributor.authorUrry, C. Megan
dc.contributor.authorHarrison, Fiona
dc.date.accessioned2025-09-03T15:37:19Z
dc.date.available2025-09-03T15:37:19Z
dc.date.issued2025
dc.description.abstractActive galactic nuclei (AGN) emit radiation via accretion across the entire energy spectrum. While the standard disk and corona model can somewhat describe this emission, it fails to predict specific features such as the soft X-ray excess, the short-term optical/UV variability, and the observed UV/X-ray correlation in AGN. In this context, the fraction of AGN emission in different bands (i.e., bolometric corrections) can be useful to better understand the accretion physics of AGN. Past studies have shown that the X-ray bolometric corrections are strongly dependent on the physical properties of AGN, such as their luminosities and Eddington ratios. However, since these two parameters depend on each other, it has been unclear which is the main driver of the X-ray bolometric corrections. We present here results from a large study of hard-X-ray-selected (14–195 keV) nearby (z < 0.1) AGN. Based on our systematic analysis of the simultaneous optical-to-X-ray spectral energy distributions of 236 unobscured AGN, we found that the primary parameter controlling the X-ray bolometric corrections is the Eddington ratio. Our results show that, while the X-ray bolometric correction increases with the bolometric luminosity for sources with intermediate Eddington ratios (0.01–1), this dependence vanishes for sources with lower Eddington ratios (<0.01). This could be used as evidence for a change in the accretion physics of AGN at low Eddington ratios.
dc.fechaingreso.objetodigital2025-09-03
dc.format.extent9 páginas
dc.fuente.origenORCID
dc.identifier.doi10.3847/1538-4357/adf0f8
dc.identifier.urihttps://doi.org/10.3847/1538-4357/adf0f8
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/105538
dc.information.autorucInstituto de Astrofísica; Treister, Ezequiel; 0000-0001-7568-6412; 1031846
dc.information.autorucInstituto de Astrofísica; Moral Castro, Ignacio del; S/I; 1338260
dc.issue.numero1
dc.language.isoen
dc.nota.accesocontenido completo
dc.revistaThe Astrophysical Journal
dc.rightsacceso abierto
dc.rights.licenseCC BY 4.0 Attribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectActive galactic nuclei
dc.subjectX-ray active galactic nuclei
dc.subjectActive galaxies
dc.subjectGalaxy nuclei
dc.subjectHigh energy astrophysics
dc.subject.ddc520
dc.subject.deweyAstronomíaes_ES
dc.titleBASS. LIII. The Eddington Ratio as the Primary Regulator of the Fraction of X-Ray Emission in Active Galactic Nuclei
dc.typeartículo
dc.volumen990
sipa.codpersvinculados1031846
sipa.codpersvinculados1338260
sipa.trazabilidadORCID;2025-09-01
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