| Proposal ID | 020537 |
| Title | THE X-RAY TEMPERATURE FUNCTION AND STRUCTURE OF CLUSTERS AT Z |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0205370101 |
| DOI | https://doi.org/10.5270/esa-njka4ph |
| Principal Investigator, PI | Dr LAURENCE JONES |
| Abstract | Under very general theoretical assumptions, the evolution of the space densityof clusters of galaxies is extremely sensitive to cosmological parameters. Themost straightforward method of exploiting this sensitivity is throughmeasurements of the X-ray temperature function. We propose to measure thetemperatures and structure of a complete sample of clusters with a mean redshiftof z=0.8. We will determine the density parameter to an accuracy better than 10per cent, including accounting for the high degree of substructure suspected ina large fraction of the clusters. If confirmed, this substructure would indicatethat we are starting to observe the epoch of massive cluster formation. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2004-05-10T05:01:49Z/2004-05-12T05:48:23Z |
| 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 | "complete sample", "massive cluster formation", "straightforward method", "space density", "mean redshift", "xray temperature function", "density parameter", "substructure suspected", "cosmological parameters" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr LAURENCE JONES, 2006, 'THE X-RAY TEMPERATURE FUNCTION AND STRUCTURE OF CLUSTERS AT Z', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-njka4ph |