Proposal ID | 020034 |
Title | THE HOTTEST, RELAXED HIGH-Z GALAXY CLUSTER |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0200340101 |
DOI | https://doi.org/10.5270/esa-srui9ze |
Principal Investigator, PI | Mr BENJAMIN MAUGHAN |
Abstract | We propose an 84ks observation of the massive galaxy cluster ClJ1226.9+3332 atz0.89 to detect its emission out to the virial radius (Rv). This cluster is thehottest known at z>0.6 (kT=11.5keV), is highly luminous, and uniquely, appearsrelaxed. The proposed observation uses the sensitivity of XMM to trace theemission out to Rv, construct a detailed temperature profile, and map surfacebrightness and temperature variations on small and large scales. Combined withour existing high-quality multi-wavelength data, this will allow us to measurethe clusters properties (eg total mass, gas-mass fraction) with anunprecedented degree of accuracy. These measurements will enable newcosmological constraints to be placed, and provide the benchmark for comparisons with other high-z clusters. |
Publications |
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Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2004-06-02T20:00:21Z/2004-06-03T23:27:30Z |
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 | 2005-06-26T00:00:00Z |
Last Update | 2025-01-27 |
Keywords | "map surface brightness", "virial radius rv", "z galaxy cluster", "z clusters", "temperature variations", "temperature profile", "cosmological constraints", "appears relaxed", "XMM", "gas mass fraction" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Mr BENJAMIN MAUGHAN, 2005, 'THE HOTTEST, RELAXED HIGH-Z GALAXY CLUSTER', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-srui9ze |