Preprint
Investigating the {Origin} of the Absorption-Line Variability in Narrow-Line Seyfert 1 Galaxy WPVS 007
arXiv.org
09 May 2024
Abstract
2023, ApJ, 953, 186 Broad Absorption Line Quasars (BALQs) are actively accreting supermassive
black holes that have strong outflows characterized by broad absorption lines
in their rest-UV spectra. Variability in these absorption lines occurs over
months to years depending on the source. WPVS 007, a low-redshift,
low-luminosity Narrow-line Seyfert 1 (NLS1) shows strong variability over
shorter timescales, providing a unique opportunity to study the driving
mechanism behind this variability that may mimic longer scale variability in
much more massive quasars. We present the first variability study using {the}
spectral synthesis code SimBAL, which provides velocity-resolved changes in
physical conditions of the gas using constraints from multiple absorption
lines. Overall, we find WPVS 007 to have a highly ionized outflow with a large
mass-loss rate and kinetic luminosity. We determine the primary cause of the
absorption-line variability in WPVS 007 to be a change in covering fraction of
the continuum by the outflow. This study is the first SimBAL analysis where
multiple epochs of observation were fit simultaneously, demonstrating the
ability of SimBAL to use the time-domain as an additional constraint in
spectral models.
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Details
- Title
- Investigating the {Origin} of the Absorption-Line Variability in Narrow-Line Seyfert 1 Galaxy WPVS 007
- Creators
- Kaylie S Green - Western UniversitySarah C Gallagher - Western UniversityKaren M Leighly - University of OklahomaHyunseop Choi - University of OklahomaDirk Grupe - Northern Kentucky UniversityDonald M Terndrup - The Ohio State UniversityGordon T Richards - Drexel UniversityS Komossa - MPI fuer Radioastronomie
- Publication Details
- arXiv.org
- Resource Type
- Preprint
- Language
- English
- Academic Unit
- Physics
- Other Identifier
- 991021877715604721