Microlensing of the broad-line region in the quadruply imaged quasar HE0435-1223

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dc.contributor.authorBraibant, L.
dc.contributor.authorHutsemekers, D.
dc.contributor.authorSluse, D.
dc.contributor.authorAnguita, T.
dc.contributor.authorGarcia-Vergara, C. J.
dc.date.accessioned2025-01-23T21:44:36Z
dc.date.available2025-01-23T21:44:36Z
dc.date.issued2014
dc.description.abstractUsing infrared spectra of the z = 1.693 quadruply lensed quasar HE0435-1223 acquired in 2009 with the spectrograph SINFONI at the ESO Very Large Telescope, we have detected a clear microlensing effect in images A and D. While microlensing affects the blue and red wings of the H alpha line profile in image D very differently, it de-magnifies the line core in image A. The combination of these different effects sets constraints on the line-emitting region; these constraints suggest that a rotating ring is at the origin of the H alpha line. Visible spectra obtained in 2004 and 2012 indicate that the MgII line profile is microlensed in the same way as the H alpha line. Our results therefore favour flattened geometries for the low-ionization line-emitting region, for example, a Keplerian disk. Biconical models cannot be ruled out but require more fine-tuning. Flux ratios between the different images are also derived and confirm flux anomalies with respect to estimates from lens models with smooth mass distributions.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361/201423633
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://doi.org/10.1051/0004-6361/201423633
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101696
dc.identifier.wosidWOS:000336730900143
dc.language.isoen
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectgravitational lensing: micro
dc.subjectgalaxies: active
dc.subjectquasars: emission lines
dc.subjectquasars: individual: HE0435-1223
dc.titleMicrolensing of the broad-line region in the quadruply imaged quasar HE0435-1223
dc.typeartículo
dc.volumen565
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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