The Cause of Narrow Absorption Lines Intrinsic to Quasi--Stellar Objects

Details The Cause of Narrow Absorption Lines Intrinsic to Quasi--Stellar Objects The Cause of Narrow Absorption Lines Intrinsic to Quasi--Stellar Objects

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000hst..prop.8763c&link_type=abstract

HST Proposal ID #8763

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Hst Proposal Id #8763 Agn/Quasars

Scientific paper

We propose to investigate the archived FOS {R=1300} observations of quasars for the purpose of understanding the origins of low redshift {z<1} associated {Delta v<5000 kms} CIV narrow absorption lines {NALs}. Many of these NALs are intrinsic to the quasar and are likely to be related to outflow or inflow from the central engine. Therefore, their rate of incidence and its relationship to other quasar properties will constrain the geometry, ionization conditions, and kinematics of these flows. From studies of high redshift quasars, the existence of intrinsic NALs is likely to require some complex combination of QSO properties, and results from ground-based work in this area have left many questions as yet unanswered. Are NALS the result of orientation relative to the line of sight? Is it related to the relative {to Eddington} luminosity of the accretion disk? Only at low redshift, with data from the HST/FOS archive, can we study quasars with a range of luminosities, and accurately determine their radio morphologies and X-ray properties. Employing radio and X-ray data {luminosity, spectral index, morphology} from both the literature and online catalogs {e.g. NVSS, RASS}, we will perform multivariate and 2-sample statistical tests to determine the combination of QSO properties that give rise to the presence of NALs along the line-of-sight.

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