Radiation pressure, absorption and AGN feedback in the <i>Chandra Deep Fields</i>

Simple item page
dc.contributor.authorRaimundo, S. I.
dc.contributor.authorFabian, A. C.
dc.contributor.authorBauer, F. E.
dc.contributor.authorAlexander, D. M.
dc.contributor.authorBrandt, W. N.
dc.contributor.authorLuo, B.
dc.contributor.authorVasudevan, R. V.
dc.contributor.authorXue, Y. Q.
dc.date.accessioned2025-01-21T00:04:33Z
dc.date.available2025-01-21T00:04:33Z
dc.date.issued2010
dc.description.abstractThe presence of absorbing gas around the central engine of active galactic nuclei (AGN) is a common feature of these objects. Recent work has looked at the effect of the dust component of the gas, and how it enhances radiation pressure such that dusty gas can have a lower effective Eddington limit than ionized gas. In this work, we use multiwavelength data and X-ray spectra from the 2 Ms exposures of the Chandra Deep Field-North and Chandra Deep Field-South surveys to characterize the AGN in terms of their Eddington ratio (lambda) and hydrogen column density (N-H). Their distributions are then compared with what is predicted when considering the coupling between dust and gas. Our final sample consists of 234 objects from both fields, the largest and deepest sample of AGN for which this comparison has been made up to date. We find that most of the AGN in our sample tend to be found at low Eddington ratios (typically 10-4 < lambda < 10-1) and high N-H (> 1022 cm-2), with black hole masses in the range similar to(108-109) M-circle dot. Their distribution is in agreement with that expected from the enhanced radiation pressure model, avoiding the area where we would predict the presence of outflows. We also investigate how the balance between AGN radiation pressure and gravitational potential influences the behaviour of clouds in the Galactic bulge, and describe a scenario where an enhanced radiation pressure can lead to the Fundamental Plane of black hole/galaxy scaling relations.
dc.fuente.origenWOS
dc.identifier.doi10.1111/j.1365-2966.2010.17234.x
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1111/j.1365-2966.2010.17234.x
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95511
dc.identifier.wosidWOS:000283165600030
dc.issue.numero3
dc.language.isoen
dc.pagina.final1720
dc.pagina.inicio1714
dc.revistaMonthly notices of the royal astronomical society
dc.rightsacceso restringido
dc.subjectblack hole physics
dc.subjectgalaxies: active
dc.subjectgalaxies: nuclei
dc.subjectquasars: general
dc.titleRadiation pressure, absorption and AGN feedback in the <i>Chandra Deep Fields</i>
dc.typeartículo
dc.volumen408
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas