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dc.contributor.authorBraibant, L
dc.contributor.authorHutsemekers, D
dc.contributor.authorSluse, D
dc.contributor.authorAnguita, T
dc.date.accessioned2017-03-10T15:21:06Z
dc.date.available2017-03-10T15:21:06Z
dc.date.issued2016-07
dc.identifier.citationA&A 592, A23 (2016)es
dc.identifier.issn1432-0746
dc.identifier.otherhttps://doi.org/10.1051/0004-6361/201628594
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/3067
dc.descriptionIndexación: Web of Sciencees
dc.description.abstractWe investigate the kinematics and ionization structure of the broad emission line region of the gravitationally lensed quasar QSO2237 + 0305 (the Einstein cross) using differential microlensing in the high-and low-ionization broad emission lines. We combine visible and near-infrared spectra of the four images of the lensed quasar and detect a large-amplitude microlensing effect distorting the high-ionization CIV and low-ionization H alpha line profiles in image A. While microlensing only magnifies the red wing of the Balmer line, it symmetrically magnifies the wings of the CIV emission line. Given that the same microlensing pattern magnifies both the high-and low-ionization broad emission line regions, these dissimilar distortions of the line profiles suggest that the high-and low-ionization regions are governed by different kinematics. Since this quasar is likely viewed at intermediate inclination, we argue that the differential magnification of the blue and red wings of H alpha favors a flattened, virialized, low-ionization region whereas the symmetric microlensing effect measured in CIV can be reproduced by an emission line formed in a polar wind, without the need of fine-tuned caustic configurations.es
dc.description.urihttp://www.aanda.org/articles/aa/abs/2016/08/aa28594-16/aa28594-16.html
dc.language.isoenes
dc.publisherEDP SCIENCESes
dc.subjectACTIVE GALACTIC NUCLEIes
dc.subjectACCRETION DISKes
dc.subjectLENSING EXPERIMENTes
dc.subjectQSO 2237+0305es
dc.subjectTIME DELAYSes
dc.subjectBLACK-HOLEes
dc.subjectC-IVes
dc.subjectQUASARes
dc.subjectREGIONes
dc.subjectGALAXYes
dc.titleThe different origins of high- and low-ionization broad emission lines revealed by gravitational microlensing in the Einstein crosses
dc.typeArticlees


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