Broad Absorption Line Quasars with Polar Outflows

It is widely accepted that the broad absorption line (BAL) outflow exists inmost quasars with a small covering factor. Various evidences show that equatorial outflows are responsible for the BALs in most BALQSOs. By searchingfor radio variable quasars in SDSS, we built a sample of BALQSOs with polaroutflows. It is very likely that polar outflows are associated with relativisticjets, and their origins should be different from the equatorial outflows inthe majority of BALQSOs. We propose an XMM snapshot survey to a)check whether strong Xray absorption, one of the most prominent characteristics of BALQSOs, exist in the polar outflows b)whether faceon BALQSOs are otherwiseXray normal c)provide a baseline for future extensive Xray studies. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]