A Uniform Chandra Survey of the Brightest and Most Extreme SDSS BALQSOs

Details A Uniform Chandra Survey of the Brightest and Most Extreme SDSS BALQSOs A Uniform Chandra Survey of the Brightest and Most Extreme SDSS BALQSOs

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cxo..prop.2008a&link_type=abstract

Chandra Proposal ID #07700859

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Chandra Proposal Id #07700859

Scientific paper

X-rays are unique probes of BALQSO outflows, and early ROSAT upper limits first suggested much higher column densities than UV/optical studies. Harder X-ray data on small heterogeneous sets of bright BALQSOs later measured columns of 10^23/cm^2 in normal high-ionization outflows, but limited X-ray data on low-ionization and other extreme BALQSO types suggest yet higher columns, up to Compton thick. SDSS provides the largest uniform sample of bright BALQSOs, including both normal and extreme types. We propose new Chandra observations of 9 of the brightest SDSS BALQSOs to: investigate outflows in a uniform sample, find the best targets for quality follow-on X-ray spectra, and test the link in extreme cases between their pathology and the physical parameters of the outflows.

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