Ultrasoft, narrow-line Seyfert 1s represent one extreme of activity in ActiveGalactic Nuclei (AGN). However, their high-luminosity counterparts, theultrasoft/narrow-line quasars, have received little attention, largely due to apaucity of targets. Here we propose to rectify this situation with XMMobservations of six luminous, narrow-line quasars at zvirgul0.5. We will determinethe shape of the X-ray continuum and compare this to both the lower-luminosityultrasoft objects and ..normal. quasars of comparable luminosity. We willsearch for rapid variability, common in lower luminosity objects, and perhapsthe clearest indicator of extreme activity in the nucleus.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2004-10-25T01:29:29Z/2005-01-28T13:47:48Z
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 SIMON VAUGHAN, 2006, 'EXPLORATORY OBSERVATIONS OF LUMINOUS ULTRASOFT comma NARROW-LINE QUASARS', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-cm1ewdd
