A dataset provided by the European Space Agency

Name 020048
Title EXPLORATORY OBSERVATIONS OF LUMINOUS ULTRASOFT, NARROW-LINE QUASARS
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0200480101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0200480201
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0200480401

DOI 10.5270/esa-cm1ewdd
Author Dr SIMON VAUGHAN
Description Ultrasoft, narrow-line Seyfert 1s represent one extreme of activity in Active Galactic Nuclei (AGN). However, their high-luminosity counterparts, the ultrasoft-narrow-line quasars, have received little attention, largely due to a paucity of targets. Here we propose to rectify this situation with XMM observations of six luminous, narrow-line quasars at z~0.5. We will determine the shape of the X-ray continuum and compare this to both the lower-luminosity ultrasoft objects and ''normal.. quasars of comparable luminosity. We will search for rapid variability, common in lower luminosity objects, and perhaps the clearest indicator of extreme activity in the nucleus.
Publication The XMM-Newton X-ray Spectra of the Most X-ray Luminous Radio-quiet ROSAT Bright Survey-QSOs: A Reference Sample for the Interpretation of High-redshift QSO Spectra . Krumpe, M., Lamer, G., et all. . ApJ . 725-2444 . 2010 . 2010ApJ...725.2444K ,
The XMM-Newton serendipitous survey. V. The Second XMM-Newton serendipitous source catalogue . Watson, M. G., Schroder, A. C., et all. . A&A . 493-339 . 2009 . 2009A&A...493..339W ,
The X-ray Energy Dependence of the Relation Between Optical and X-ray Emission in Quasars . Young, M., Elvis, M., . ApJ . 708-1388 . 2010 . 2010ApJ...708.1388Y ,
An Extremely Luminous Panchromatic Outburst from the Nucleus of a Distant Galaxy . Levan, A. J., Tanvir, N. R., et all. . Sci . 333-199 . 2011 . 2011Sci...333..199L ,
New constraints on the X-ray spectral properties of type 1 active galactic nuclei . Scott, A. E., Stewart, G. C., et all. . MNRAS . 417-992 . 2011 . 2011MNRAS.417..992S ,
Statistical evaluation of the flux cross-calibration of the XMM-Newton EPIC cameras . Mateos, S., Saxton, R. D., et all. . A&A . 496-879 . 2009 . 2009A&A...496..879M ,
X-ray Emission from Optically Selected Radio-intermediate and Radio-loud Quasars . Miller, B. P., Brandt, W. N., et all. . ApJ . 726-20 . 2011 . 2011ApJ...726...20M ,
The XMM Cluster Survey: optical analysis methodology and the first data release . Mehrtens, Nicola, Romer, A. Kathy, et...
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 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 2006-02-19T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2006-02-19T00:00:00Z, 020048, 17.56_20190403_1200. https://doi.org/10.5270/esa-cm1ewdd