A dataset provided by the European Space Agency

Name 060619
Title Soft X-ray loud broad absorption-line quasars


DOI https://doi.org/10.5270/esa-kpp5x6e
Author Dr Kajal Ghosh
Description We have discovered three soft X-ray loud broad absorption-line quasars, based on
the ROSAT data. The conundrum posed by this new class of AGN is how can a BAL
region coexist with a powerful source of X-rays, since even a modest flux of
X-rays will over-ionize the gas making it impossible to form Li-like atoms. We
propose three short XMM-Newton observations of these three objects to determine
their spectral nature (soft or hard) and to identify the possible origin of
X-ray emissions.
Publication No observations found associated with the current proposal
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 Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2011-02-06T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Kajal Ghosh, 2011, 060619, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-kpp5x6e