Deceleration of CIV and SiIV broad absorption lines in X-ray bright quasar SDSS-J092345+512710

Abstract

We report a synchronized kinematic shift of CIV and SiIV broad absorption lines (BAL) in a high-ionization, radio-loud, and X-ray bright quasar SDSS-J092345+512710 (at $z_{em}\sim 2.1627$). This quasar shows two broad absorption components (blue component at $v\sim 14,000km{s}^{-1}$, and red component at $v\sim 4,000km{s}^{-1}$ with respect to the quasars systemic redshift). The absorption profiles of CIV and SiIV BAL of the blue component show decrease in outflow velocity with an average deceleration rate of $-1.62_{-0.05}^{+0.04}cm{s}^{-2}$ and $-1.14_{-0.22}^{+0.21}cm{s}^{-2}$ over a rest-frame time-span of 4.15 yr. We do not see any acceleration-like signature in the red component. This is consistent with dramatic variabilities usually seen at high velocities. During our monitoring period the quasar has shown no strong continuum variability. We suggest the observed variability could be related to the time dependent changes in disk wind parameters like launching radius, initial flow velocity or mass outflow rate.

10 Pages, 2 Figures, 2 Tables (Accepted for Publication in ApJ main Journal)

References in corpus (15)

• A Catalog of Quasar Properties from SDSS DR7
• A Catalog of Broad Absorption Line Quasars in Sloan Digital Sky Survey Data Release 5
• Are Optically-Selected Quasars Universally X-Ray Luminous? X-Ray/UV Relations in Sloan Digital Sky Survey Quasars
• Broad Absorption Line Variability in Repeat Quasar Observations from the Sloan Digital Sky Survey
• Tombaugh 2: The First Open Cluster with a Significant Abundance Spread or Embedded in a Cold Stellar Stream?
• Evidence that 50% of BALQSO Outflows Are Situated at Least 100 pc from the Central Source
• Weak Hard X-ray Emission from Broad Absorption Line Quasars: Evidence for Intrinsic X-ray Weakness
• The Sloan Digital Sky Survey Reverberation Mapping Project: Rapid CIV Broad Absorption Line Variability
• Radiation pressure confinement - IV. Application to broad absorption line outflows
• Acceleration and Substructure Constraints in a Quasar Outflow
• On the absorption of X-ray bright broad absorption line quasars
• Non-Axisymmetric Line Driven Disc Winds II - Full Velocity Gradient
• The Frequency of Intrinsic X-ray Weakness Among Broad Absorption Line Quasars
• Non-Axisymmetric Line Driven Disc Winds I - Disc Perturbations
• Quasar outflow energetics from broad absorption line variability

Cited by in corpus (5)

• Appearance vs Disappearance of broad absorption line troughs in quasars
• A Kinematic Shift of the C IV Broad Absorption Line in Quasar SDSS J120819.29+035559.4
• Correlated time variability of multi-component high velocity outflows in J162122.54+075808.4
• The SDSS-V Black Hole Mapper Reverberation Mapping Project: CIV BAL Acceleration in the Quasar SBS 1408+544
• Velocity shift of Mg II and Al III broad absorption lines in quasar SDSS J134444.33+315007.6