Broad absorption line disappearance and emergence using multiple-epoch spectroscopy from the Sloan Digital Sky Survey
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx1063
Abstract: We investigate broad absorption line (BAL) disappearance and emergence using a 470 BAL-quasar sample over 1x10^-7 pc (0.02 au) using the ionization-change scenario, and constrain a nominal outflow location of < 0.5 pc and a… read more here.
Keywords: absorption line; emergence using; broad absorption; disappearance emergence ... See more keywords
Redshifted broad absorption line quasars found via machine-learned spectral similarity
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DOI: 10.1093/mnras/sty2127
Abstract: We report the discovery of 31 new redshifted broad absorption line quasars (RSBALs) from the Sloan Digital Sky Survey (SDSS). The number of previously known such objects is 19. The identification of the new objects… read more here.
Keywords: absorption line; broad absorption; redshifted broad; line quasars ... See more keywords
C IV Broad Absorption Line Variability in QSO Spectra from SDSS Surveys
Sign Up to like & getrecommendations! Published in 2017 at "Frontiers in Astronomy and Space Sciences"
DOI: 10.3389/fspas.2017.00064
Abstract: Broad absorption lines (BALs) in the spectra of quasi-stellar objects (QSOs) are thought to arise from outflowing winds along our line of sight; winds, in turn, are thought to originate from the accretion disk, in… read more here.
Keywords: absorption line; line; variability; broad absorption ... See more keywords