The universal shape of the X-ray variability power spectrum of AGN up to <i>z</i> ∼ 3

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dc.contributor.authorPaolillo, M.
dc.contributor.authorPapadakis, I. E.
dc.contributor.authorBrandt, W. N.
dc.contributor.authorBauer, F. E.
dc.contributor.authorLanzuisi, G.
dc.contributor.authorAllevato, V.
dc.contributor.authorShemmer, O.
dc.contributor.authorZheng, X. C.
dc.contributor.authorDe Cicco, D.
dc.contributor.authorGilli, R.
dc.contributor.authorLuo, B.
dc.contributor.authorThomas, M.
dc.contributor.authorTozzi, P.
dc.contributor.authorVito, F.
dc.contributor.authorXue, Y. Q.
dc.date.accessioned2025-01-20T20:11:01Z
dc.date.available2025-01-20T20:11:01Z
dc.date.issued2023
dc.description.abstractAims. We study the ensemble X-ray variability properties of active galactic nuclei (AGN) over large ranges of timescale (20 ks <= T <= 14 yr), redshift (0 <= z less than or similar to 3), luminosity (10(40) erg s(-1) <= L-X <= 10(46) erg s(-1)), and black hole (BH) mass (10(6) <= M-circle dot <= 10(9)).
dc.description.abstractMethods. We propose the use of the variance-frequency diagram as a viable alternative to the study of the power spectral density (PSD), which is not yet accessible for distant, faint, and/or sparsely sampled AGN.
dc.description.abstractResults. We show that the data collected from archival observations and previous literature studies are fully consistent with a universal PSD form, which does not show any evidence for systematic evolution of shape or amplitude with redshift or luminosity, even if there may be differences between individual AGN at a given redshift or luminosity. We find new evidence that the PSD bend frequency depends on BH mass and possibly on accretion rate. We finally discuss the implications for current and future AGN population and cosmological studies.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361/202245291
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://doi.org/10.1051/0004-6361/202245291
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92113
dc.identifier.wosidWOS:000992316000001
dc.language.isoen
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectgalaxies: active
dc.subjectblack hole physics
dc.subjectquasars: supermassive black holes
dc.subjectX-rays: galaxies
dc.subjectsurveys
dc.subjectmethods: statistical
dc.titleThe universal shape of the X-ray variability power spectrum of AGN up to <i>z</i> ∼ 3
dc.typeartículo
dc.volumen673
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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