76 citations · 117 across the 3 of their papers we have counts for
6 papers
Variability of Low-ionization Broad Absorption Line Quasars Based on Multi-epoch Spectra from The Sloan Digital Sky Survey
Weimin. Yi, W. N. Brandt, P. B. Hall +5
We present absorption variability results for 134 bona fide \mgii\ broad absorption line (BAL) quasars at 0.46~~2.3 covering days to 10 yr in the rest f…
The MeerKAT Absorption Line Survey (MALS)
N. Gupta, R. Srianand, W. Baan +41
Deep galaxy surveys have revealed that the global star formation rate (SFR) density in the Universe peaks at 1 < z < 2 and sharply declines towards z = 0. But a clear picture of th…
Broad absorption line disappearance and emergence using multiple-epoch spectroscopy from the Sloan Digital Sky Survey
S. M. McGraw, W. N. Brandt, C. J. Grier +8
We investigate broad absorption line (BAL) disappearance and emergence using a 470 BAL-quasar sample over < 0.10-5.25 rest-frame years with at least three spectroscopic epochs for…
The Composite Spectrum of BOSS Quasars Selected for Studies of the Lyman-alpha Forest
David W. Harris, Trey W. Jensen, Nao Suzuki +12
The Baryon Oscillation Spectroscopic Survey (BOSS) has collected more than 150,000 quasar spectra since 2009. Using this unprecedented sample, we create a com…
CIV Broad Absorption Line Acceleration in Sloan Digital Sky Survey Quasars
C. J. Grier, W. N. Brandt, P. B. Hall +10
We present results from the largest systematic investigation of broad absorption line (BAL) acceleration to date. We use spectra of 140 quasars from three Sloan Digital Sky Survey…
The Sloan Digital Sky Survey Reverberation Mapping Project: Rapid CIV Broad Absorption Line Variability
C. J. Grier, P. B. Hall, W. N. Brandt +22
We report the discovery of rapid variations of a high-velocity CIV broad absorption line trough in the quasar SDSS J141007.74+541203.3. This object was intensively observed in 2014…