A dataset provided by the European Space Agency

Proposal ID 000461
Title RXJ1821+6828: Temperature Distribution and Metallicity for a z=0.81 cluster
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DOI https://doi.org/10.5270/esa-fvxah55
Principal Investigator, PI Dr Isabella Gioia
Abstract There are only a few X-ray selected clusters with redshift greaterthan 0.8, making each of them a prime target of studies of clusterformation. We propose to observe the cluster RXJ1821+6828 at z=0.8108,found in the NEP region of the ROSAT All-Sky Survey, to derive theX-ray temperature distribution, measure the iron abundance, andobtain an high quality image. Temperature information for high-zclusters places strong constraints on cosmological models and onthe physical processes in the early epochs of our universe. Existinglower resolution X-ray images indicate that these clusters are oftenfilamentary with the X-ray flux generated at the impact point of the
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2002-11-09T06:38:14Z/2002-12-19T11:05:55Z
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 2004-08-07T00:00:00Z
Keywords "xray temperature distribution", "nep region", "quality image", "cosmological models", "cluster formation", "xray flux", "prime target", "temperature distribution", "iron abundance", "z cluster", "physical processes", "cluster rxj1821", "81 cluster", "RXJ1821+6828", "ROSAT", "temperature information", "sky survey"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Isabella Gioia, 2004, 'RXJ1821+6828: Temperature Distribution and Metallicity for a z=0.81 cluster', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-fvxah55