Probing the Line-locking Signatures within the C iv Broad Absorption Line in Quasar SDSS J092345+512710

Quasar SDSS J092345.19+512710.1 (hereafter J0923+5127) shows two broad absorption line (BAL) systems. The blue one at ∼14,000 km s−1, called BAL system A, has been reported to show a synchronized kinematic shift of its C iv and Si iv BALs. In this paper, we mainly concentrate on the red one at ∼4000...

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Bibliographic Details
Published inThe Astrophysical journal Vol. 899; no. 2; pp. 155 - 160
Main Authors Lin, Ying-Ru, Lu, Wei-Jian
Format Journal Article
LanguageEnglish
Published Philadelphia The American Astronomical Society 01.08.2020
IOP Publishing
Subjects
Absorption
Astrophysics
Broad-absorption line quasar
Locking
Quasar absorption line spectroscopy
Quasars
Radiation
Radiation pressure
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ISSN0004-637X
1538-4357
DOI10.3847/1538-4357/aba9db

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Summary:Quasar SDSS J092345.19+512710.1 (hereafter J0923+5127) shows two broad absorption line (BAL) systems. The blue one at ∼14,000 km s−1, called BAL system A, has been reported to show a synchronized kinematic shift of its C iv and Si iv BALs. In this paper, we mainly concentrate on the red one at ∼4000 km s−1, called BAL system B, which can be resolved into multiple narrow absorption lines (NALs). We identify 11 NAL systems from BAL system B and find that these blended NALs show complex line-locking phenomena, which offers evidence for the idea that radiation pressure plays an important role in the dynamics of these clumpy outflow clouds.
Bibliography:AAS25292
Galaxies and Cosmology
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ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/aba9db