Proposal ID | 020634 |
Title | BARYON BUDGET IN 2 KEV GALAXY GROUPS |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0206340101 |
DOI | https://doi.org/10.5270/esa-r65uut2 |
Principal Investigator, PI | Dr ALLAN HORNSTRUP |
Abstract | We propose XMM EPIC observations of 3 typical X-ray selected galaxy groups. Ourobjects are both bright and sufficiently distant (z=0.10-0.13) so that they eachcan be detected to their virial radius in a single pointing. The XMMobservations will provide accurate mass profiles to r_500. In combination withthe already obtained optical observations, we will be able to establish thebaryon budget in T = 2 keV groups, accurately calibrating the M-T relation atgroup scale, and quantifying any trends in the baryon fraction from richclusters to groups. These data will have important implications for the thermalhistory of the intergalactic medium and cluster-based cosmological tests,complementing ongoing cluster surveys focusing on rich clusters. |
Publications |
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Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2004-04-23T21:02:33Z/2004-10-27T14:00:45Z |
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 | 2005-12-03T00:00:00Z |
Last Update | 2025-01-27 |
Keywords | "virial radius", "EPIC", "thermal history", "rich cluster", "mass profiles", "intergalactic medium", "typical xray", "distant z", "baryon budget", "xmm epic", "rich clusters", "cosmological tests", "XMM", "cluster surveys focusing", "kev galaxy", "baryon fraction" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr ALLAN HORNSTRUP, 2005, 'BARYON BUDGET IN 2 KEV GALAXY GROUPS', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-r65uut2 |