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A sensitive submillimetre survey of Broad Absorption Line quasars (2006)
BibTeX
@MISC{Priddey06asensitive,
author = {Robert S. Priddey and S. C. Gallagher and K. G. Isaak and R. G. Sharp and R. G. Mcmahon and H. M. Butner},
title = {A sensitive submillimetre survey of Broad Absorption Line quasars},
year = {2006}
}
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Abstract
Using the SCUBA bolometer array on the JCMT, we have carried out a submillimetre (submm) survey of Broad Absorption Line quasars (BALQs). The sample has been chosen to match, in redshift and optical luminosity, an existing benchmark 850µm sample of radio-quiet quasars, allowing a direct comparison of the submm properties of BAL quasars relative to the parent radio-quiet population. We reach a submm limit 1σ≈1.5mJy at 850µm, allowing a more rigorous measure of the submm properties of BAL quasars than previous studies. Our submm photometry complements extensive observations at other wavelengths, in particular X-rays with Chandra and infrared with Spitzer. To compare the 850µm flux distribution of BALQs with that of the non-BAL quasar benchmark sample, we employ a suite of statistical methods, including survival analysis and a novel Bayesian derivation of the underlying flux distribution. Although there are no strong grounds for rejecting the null hypothesis that BALQs on the whole have the same submm properties as non-BAL quasars, we do find tentative evidence
Keyphrases
broad absorption line quasar submm property sensitive submillimetre survey bal quasar survival analysis strong ground non-bal quasar rigorous measure previous study tentative evidence parent radio-quiet population non-bal quasar benchmark sample particular x-ray direct comparison novel bayesian derivation statistical method radio-quiet quasar null hypothesis flux distribution underlying flux distribution submm photometry complement extensive observation submm limit optical luminosity scuba bolometer array
