| Proposal ID | 014733 |
| Title | The missing soft X-ray luminosity in cluster cooling flows |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0147330101 |
| 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 |
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| 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 |
| Last Update | 2025-01-27 |
| Keywords | "soft xray luminosity", "gas cooling", "deep rgs", "galaxy formation", "cluster cooling flows", "inner gas", "rgs spectra", "virial temperature", "little emission", "mass cooling rate", "xray 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 |