Testing the Radiative-Driving Hypothesis of Quasar Outflows

Details Testing the Radiative-Driving Hypothesis of Quasar Outflows Testing the Radiative-Driving Hypothesis of Quasar Outflows

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2636g&link_type=abstract

Chandra proposal ID #10700662

Physics

Scientific paper

Outflows are seen prominently in the UV spectra of Broad Absorption Line (BAL) QSOs. Radiatively-driven outflows predict that the velocity (vmax) should scale with UV luminosity (LUV). Observations show that LUV only provides a cap to vmax. One explanation is that the X-ray absorbing gas in an individual quasar provides a shield that regulates its radiative driving efficiency. That is, quasars with thick shields can accelerate gas to higher vmax. To test this hypothesis, we propose snapshot (8ks) ACIS observations of 12 carefully-selected BALQSOs to investigate the relationship between vmax and X-ray absorption, and thus the role of shielding in radiative acceleration.

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