Recent X-ray observations of BALQSOs reveal absorption column densities that are2 or more orders of magnitude larger than previous estimates based on the UVBALs. Part of this discrepancy can be explained by saturation in the BALs.However, the relationship between the UV and X-ray absorbers remains unknown;simply attributing the huge X-ray column densities to outflowing BAL gas wouldhave profound implications for the wind properties. We have already obtained HSTspectra of several BALQSOs that provide rare measurements of weak lines (lesssusceptible to saturation). We now propose XMM observations of three of thesetargets. The combined data set will provide the best available constraints onthe UV/X-ray absorber relationship and the overall outflow/absorber properties.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2004-04-08T09:22:54Z/2004-07-01T13:29:59Z
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, Prof FRED HAMANN, 2005, 'THE PHYSICS OF BALQSO WINDS', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-bhovh0q
