The soft-X-ray emission of Ark 120. XMM-Newton, NuSTAR, and the importance of taking the broad view

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dc.contributor.authorMatt, G.
dc.contributor.authorMarinucci, A.
dc.contributor.authorGuainazzi, M.
dc.contributor.authorBrenneman, L. W.
dc.contributor.authorElvis, M.
dc.contributor.authorLohfink, A.
dc.contributor.authorArevalo, P.
dc.contributor.authorBoggs, S. E.
dc.contributor.authorCappi, M.
dc.contributor.authorChristensen, F. E.
dc.contributor.authorCraig, W. W.
dc.contributor.authorFabian, A. C.
dc.contributor.authorFuerst, F.
dc.contributor.authorHailey, C. J.
dc.contributor.authorHarrison, F. A.
dc.contributor.authorParker, M.
dc.contributor.authorReynolds, C. S.
dc.contributor.authorStern, D.
dc.contributor.authorWalton, D. J.
dc.contributor.authorZhang, W. W.
dc.date.accessioned2024-01-10T12:09:58Z
dc.date.available2024-01-10T12:09:58Z
dc.date.issued2014
dc.description.abstractWe present simultaneous XMM-Newton and NuSTAR observations of the 'bare' Seyfert 1 galaxy, Ark 120, a system in which ionized absorption is absent. The NuSTAR hard-X-ray spectral coverage allows us to constrain different models for the excess soft-X-ray emission. Among phenomenological models, a cutoff power law best explains the soft-X-ray emission. This model likely corresponds to Comptonization of the accretion disc seed UV photons by a population of warm electrons: using Comptonization models, a temperature of similar to 0.3 keV and an optical depth of similar to 13 are found. If the UV-to-X-ray optxagnf model is applied, the UV fluxes from the XMM-Newton Optical Monitor suggest an intermediate black hole spin. Contrary to several other sources observed by NuSTAR, no high-energy cutoff is detected with a lower limit of 190 keV.
dc.description.funderNational Aeronautics and Space Administration
dc.description.funderESA Member States
dc.description.funderUSA (NASA)
dc.description.funderItalian Space Agency under grant ASI/INAF
dc.description.funderEuropean Union
dc.description.funderScience and Technology Facilities Council
dc.fechaingreso.objetodigital2024-05-02
dc.format.extent6 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/stu159
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/stu159
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76538
dc.identifier.wosidWOS:000334114900063
dc.information.autorucAstrofísica;Arevalo P;S/I;14096
dc.issue.numero3
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final3021
dc.pagina.inicio3016
dc.publisherOXFORD UNIV PRESS
dc.revistaMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
dc.rightsacceso restringido
dc.subjectaccretion, accretion discs
dc.subjectgalaxies: active
dc.subjectgalaxies: individual: Ark 120
dc.subjectACTIVE GALACTIC NUCLEI
dc.subjectBLACK-HOLE SPIN
dc.subjectLINE REGION SIZES
dc.subjectSUZAKU OBSERVATIONS
dc.subjectCENTRAL MASSES
dc.subjectSKY SURVEY
dc.subjectSPECTRA
dc.subjectEXCESS
dc.subjectPHOTOIONIZATION
dc.subjectSEYFERT-1
dc.titleThe soft-X-ray emission of Ark 120. XMM-Newton, NuSTAR, and the importance of taking the broad view
dc.typeartículo
dc.volumen439
sipa.codpersvinculados14096
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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