FORMATION OF RAMAN SCATTERING WINGS AROUND H<i>α</i>, H<i>β</i>, AND PA<i>α</i> IN ACTIVE GALACTIC NUCLEI

Simple item page
dc.contributor.authorChang, Seok-Jun
dc.contributor.authorHeo, Jeong-Eun
dc.contributor.authorDi Mille, Francesco
dc.contributor.authorAngeloni, Rodolfo
dc.contributor.authorPalma, Tali
dc.contributor.authorLee, Hee-Won
dc.date.accessioned2025-01-23T21:33:07Z
dc.date.available2025-01-23T21:33:07Z
dc.date.issued2015
dc.description.abstractPowered by a supermassive black hole with an accretion disk, the spectra of active galactic nuclei (AGNs) are characterized by prominent emission lines including Balmer lines. The unification schemes of AGNs require the existence of a thick molecular torus that may hide the broad emission line region from the view of observers near the equatorial direction. In this configuration, one may expect that the far-UV radiation from the central engine can be Raman scattered by neutral hydrogen to reappear around Balmer and Paschen emission lines, which can be identified with broad wings. We produce H alpha, H beta, and Pa alpha wings using a Monte Carlo technique to investigate their properties. The neutral scattering region is assumed to be a cylindrical torus specified by the inner and outer radii and the height. While the covering factor of the scattering region affects the overall strengths of the wings, the wing widths are primarily dependent on the neutral hydrogen column density N-H (I) being roughly proportional to N-H I(1/2). In particular, with N-H (I) = 10(23) cm(-2) the H alpha wings typically show a width similar to 2 x 10(4) kms(-1). We also find that H alpha and Paa wing profiles are asymmetric with the red part stronger than the blue part and an opposite behavior is seen for H beta wings.
dc.description.funderKorea Astronomy and Space Science Institute under the RD program
dc.fuente.origenWOS
dc.identifier.doi10.1088/0004-637X/814/2/98
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.1088/0004-637X/814/2/98
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101508
dc.identifier.wosidWOS:000365317300016
dc.issue.numero2
dc.language.isoen
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectgalaxies: active
dc.subjectquasars: emission lines
dc.subjectradiative transfer
dc.subjectscattering
dc.titleFORMATION OF RAMAN SCATTERING WINGS AROUND H<i>α</i>, H<i>β</i>, AND PA<i>α</i> IN ACTIVE GALACTIC NUCLEI
dc.typeartículo
dc.volumen814
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas