A dataset provided by the European Space Agency

Name 011295
Title Temperature Map and Structure of two Merging Clusters
URL

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http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0112950401
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http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0112950601
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0112950701
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DOI 10.5270/esa-324epff
Author Dr Martin Turner
Description GT-We propose to observe two X-ray bright clusters, A2256 and A754, with the main goals to obtain temperature maps and highly resolved surface brightness maps. Both clusters are known to show temperature variations, as has been measured by ROSAT and ASCA, and significant substructure. Both is interpreted as the result of an ongoing merging event. The proposed measurements will allow to determine the spatially resolved gas temperature down to the square-acrmin level as well as in rings out to the virial radius. Together with the obtained surface brightness maps, this will allow to determine the dynamical state of the clusters and their gravitational mass. The maps will also be used to fine-tune hydrodynamical simulations of merging clusters.
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Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2002-03-20T15:59:37Z/2002-09-22T11:30:12Z
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 2003-10-12T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2003-10-12T00:00:00Z, 011295, 17.56_20190403_1200. https://doi.org/10.5270/esa-324epff