A dataset provided by the European Space Agency

Proposal ID 020034
Title THE HOTTEST, RELAXED HIGH-Z GALAXY CLUSTER
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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 cluster.s 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
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
Keywords "appears relaxed", "temperature variations", "XMM", "z galaxy cluster", "cosmological constraints", "map surface brightness", "z clusters", "temperature profile", "gas mass fraction", "virial radius rv"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Mr BENJAMIN MAUGHAN, 2005, 'THE HOTTEST comma RELAXED HIGH-Z GALAXY CLUSTER', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-srui9ze