| Proposal ID | 020048 |
| Title | EXPLORATORY OBSERVATIONS OF LUMINOUS ULTRASOFT, NARROW-LINE QUASARS |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0200480101 |
| DOI | https://doi.org/10.5270/esa-cm1ewdd |
| Principal Investigator, PI | Dr SIMON VAUGHAN |
| Abstract | 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 z~0.5. 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. |
| Publications |
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| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2006-02-19T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "rapid variability", "received little attention", "luminosity counterparts", "narrow line quasars", "comparable luminosity", "xray continuum", "XMM", "lower luminosity objects" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr SIMON VAUGHAN, 2006, 'EXPLORATORY OBSERVATIONS OF LUMINOUS ULTRASOFT, NARROW-LINE QUASARS', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-cm1ewdd |