A dataset provided by the European Space Agency

Proposal ID 011089
Title XMM Study of Ultrasoft Narrow-Line Seyfert 1 Galaxies SSC_4
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DOI https://doi.org/10.5270/esa-hc8islm
Principal Investigator, PI Dr Michael Watson
Abstract GT- We propose to extend X-ray studies of ultrasoft narrow-line Seyfert 1galaxies (NLS1) by making XMM observations of the most interestingmembers of this class. The broad band, large effective area and highspectral resolution of XMM will allow the best X-ray studies of NLS1 todate. We will measure their soft and hard X-ray continua, their spectralfeatures and their strong flux and spectral variability.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2000-07-31T01:41:10Z/2003-01-19T03:26:26Z
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 2004-02-19T00:00:00Z
Last Update 2025-08-04
Keywords "XMM", "galaxy ssc_4", "spectral variability", "galaxy nls1", "hard xray continua", "broad band", "spectral resolution"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Michael Watson, 2004, 'XMM Study of Ultrasoft Narrow-Line Seyfert 1 Galaxies SSC_4', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-hc8islm