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 X-ray absorption, one of the most prominent characteristics of BALQSOs, exist in the polar outflows b)whether face-on BALQSOs are otherwiseX-ray normal c)provide a baseline for future extensive X-ray studies.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2006-06-09T14:26:37Z/2007-04-24T05:42:42Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
European Space Agency, Dr Junxian Wang, 2008, 'Broad Absorption Line Quasars with Polar Outflows', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-pakz4po
