A dataset provided by the European Space Agency

Proposal ID 014733
Title The missing soft X-ray luminosity in cluster cooling flows
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0147330101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0147330201
DOI https://doi.org/10.5270/esa-wln0yz5
Principal Investigator, PI Prof Andrew Fabian
Abstract Recent X-ray spectra of cluster cooling flows, particularly RGSspectra, have shown that the mass cooling rate is much smaller thanpreviously estimated, with little emission seen from gas cooling below1 keV. The expected soft X-ray luminosity is missing. Why the innergas is so cool (20-30 per cent of the virial temperature) yetapparently not cooling is a puzzle, which has ramifications for galaxyformation. We propose deep RGS observations of A2597, A1835 and A1795to resolve this important problem.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-06-27T07:38:12Z/2003-07-30T20:05:30Z
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 2004-10-26T00:00:00Z
Keywords "gas cooling", "virial temperature", "little emission", "inner gas", "galaxy formation", "mass cooling rate", "soft xray luminosity", "deep rgs", "xray spectra", "cluster cooling flows", "rgs spectra"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Andrew Fabian, 2004, 'The missing soft X-ray luminosity in cluster cooling flows', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-wln0yz5