A dataset provided by the European Space Agency

Name 072025
Title A new Cosmological Study Approach with a Volume Limited X-ray Cluster Sample
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0720250101
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DOI https://doi.org/10.5270/esa-f2y4i92
Author Prof Hans Boehringer
Description The application of galaxy clusters in constraining cosmological models is currently mostly limited by our uncertain knowledge of scaling relations of observables and cluster mass. Most scaling relation studies are based on X-ray flux limited samples which are biased. In AO10 we proposed to take a new approach with a study of an unbiased volume-limited sample. From this approach and a comparison of both types of samples we will get many new insights into the cluster property statistics. All requested targets have been observed in AO10, but virgul 37 per cent of the observing time has been severly affected by flares. Since we require good data for the full sample, we are requesting the re-observation of 26 clusters for a total of 302 ks not to miss our original goal.
Publication No observations found associated with the current proposal
Instrument EPN, OM, RGS1, RGS2, EMOS1, EMOS2
Temporal Coverage 2013-05-02T12:40:33Z/2014-02-20T18:07:03Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2015-03-10T23:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2015-03-10T23:00:00Z, 072025, 17.56_20190403_1200. https://doi.org/10.5270/esa-f2y4i92