Reference : A polar+equatorial wind model for broad absorption line quasars. I. Fitting the C IV ...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/80840
A polar+equatorial wind model for broad absorption line quasars. I. Fitting the C IV BAL profiles
English
Borguet, Benoît mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Hutsemekers, Damien mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
1-Jun-2010
Astronomy and Astrophysics
515
A22, pp. 1-12
Yes
International
[en] quasars: absorption lines ; radiative transfer ; methods: numerical
[en] Context. Despite all the studies, the geometry of the wind at the origin of the blueshifted broad absorption lines (BAL) observed in nearly 20% of quasars still remains a matter of debate. <BR /> Aims: We want to see if a two-component polar+equatorial wind geometry can reproduce the typical BAL profiles observed in these objects. <BR /> Methods: We built a Monte Carlo radiative transfer code (called MCRT) to simulate the line profiles formed in a polar+equatorial wind in which the photons, emitted from a spherically symmetric core are resonantly scattered. Our goal is to reproduce typical C iv line profiles observed in BAL quasars and to identify the parameters governing the line profiles. <BR /> Results: The two-component wind model appears to be efficient in reproducing the BAL profiles from the P Cygni-type profiles to the more complex ones. Some profiles can also be reproduced with a pole-on view. Our simulations provide evidence of a high-velocity rotation of the wind around the polar axis in BAL quasars with non P Cygni-type line profiles.
Researchers
http://hdl.handle.net/2268/80840
10.1051/0004-6361/200913255
http://adsabs.harvard.edu/abs/2010A%26A...515A..22B
http://de.arxiv.org/abs/1003.2386

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
2010A&A...515A..22B.pdfPublisher postprint841.06 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.