We have discovered three soft X-ray loud broad absorption-line quasars, based onthe ROSAT data. The conundrum posed by this new class of AGN is how can a BALregion coexist with a powerful source of X-rays, since even a modest flux ofX-rays will over-ionize the gas making it impossible to form Li-like atoms. Wepropose three short XMM-Newton observations of these three objects to determinetheir spectral nature (soft or hard) and to identify the possible origin ofX-ray emissions.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2009-11-18T22:56:33Z/2009-11-19T09:40:11Z
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 Kajal Ghosh, 2011, 'Soft X-ray loud broad absorption-line quasars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-kpp5x6e
