526 citations · 1.4k across the 16 of their papers we have counts for
5 papers · 1 filter
Broad absorption line disappearance/emergence in multiple ions in a weak emission-line quasar
Weimin Yi, M. Vivek, W. N. Brandt +9
We report the discovery of disappearance of Mg ii, Al iii, C iv, and Si iv broad absorption lines (BALs) at the same velocity, accompanied by a new Civ BAL emerging at a higher vel…
The Sloan Digital Sky Survey Reverberation Mapping Project: Systematic Investigations of Short-Timescale CIV Broad Absorption Line Variability
Z. S. Hemler, C. J. Grier, W. N. Brandt +10
We systematically investigate short-timescale (10-day rest-frame) CIV broad absorption-line (BAL) variability to constrain quasar-wind properties and provide insights into BAL-v…
The Spectroscopic Signature of Variability in High-Redshift Quasars
Jamie C. Dyer, Kyle S. Dawson, Hélion du Mas des Bourboux +5
Using 16,421 spectra from a sample of 340 quasars () from the SDSS Reverberation Mapping Project, we present an analysis of quasar spectral variability. We confirm the…
X-ray and multi-epoch optical/UV investigations of BAL to non-BAL quasar transformations
Sameer, W. N. Brandt, S. Anderson +10
We report on an X-ray and optical/UV study of eight Broad Absorption Line (BAL) to non-BAL transforming quasars at 1.7-2.2 over 0.29-4.95 rest-frame years with at lea…
Rapidly varying Mg II broad absorption line in SDSS J133356.02+001229.1
M. Vivek, R. Srianand, K. S. Dawson
We report the discovery of rapid variations of a high-velocity Mg ii broad absorption line (BAL) trough in the quasar SDSS J133356.02+001229.1 (zem ~ 0.9197). Vivek et al. (2012a)…