How Saturated are Absorption Lines in the Broad Absorption Line Quasar PG 1411+442 ?

Abstract

Recently, convincing evidence was found for extremely large X-ray absorption by column densities $>10^{23}c{m}^{-2}$ in broad absorption line quasars. One consequence of this is that any soft X-ray emission from these QSOs would be the scattered light or leaked light from partially covering absorbing material. A detection of the unabsorbed soft X-ray and absorbed hard X-ray compo nent will allow to determine the total column density as well as the effective covering factor of the absorbing material, which can be hardly obtained from the UV absorption lines. Brinkmann et al. (1999) showed that both the unabsorbed and absorbed components are detected in the nearby very bright broad absorption line quasar PG 1411+442. In this letter, we make a further analysis of the broad band X-ray spectrum and the UV spectrum from HST, and demonstrate that broad absorption lines are completely saturated at the bottom of absorption troughs.

6 pages, 3 postscript figures. to appear in Astrophy. J. Letters

Cited by in corpus (13)

• On the Nature of Soft X-ray Weak Quasi-Stellar Objects
• A Chandra Survey of Broad Absorption Line Quasars
• XMM-Newton spectroscopy of high-redshift QSOs
• Low-z MgII Broad Absorption-Line Quasars from the Sloan Digital Sky Survey
• Insights on the X-ray weak quasar phenomenon from XMM-Newton monitoring of PHL 1092
• A Comprehensive Study of Broad Absorption Line Quasars: I. Prevalence of HeI* Absorption Line Multiplets in Low-Ionization Objects
• The Correlation between X-ray and UV Properties of BAL QSOs
• Discovery of Extremely Broad Balmer Absorption Lines in SDSS J152350.42+391405.2
• A long look at the BALQSO LBQS 2212-1759 with XMM-Newton
• XMM observations of BAL Quasars with polar outflows
• Polarization of Quasars: Resonant Line Scattering in the Broad Absorption Line Region
• Polarization of Quasars: Electron Scattering in the Broad Absorption Line Region
• On the scattering enhancement of Nv1240 emission line of quasi-stellar objects