A Study of the Radial and Azimuthal Gas Distribution in Massive Galaxy Clusters
Clusters of galaxies are particularly interesting astrophysical systems, are the largest bound structures in the Universe, and contain fair sample of cosmic ingredients. Studies of cluster abundance as a function of mass and redshift were critical in establishing the standard model of cosmology. Thi...
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ndltd-harvard.edu-oai-dash.harvard.edu-1-122746212015-08-14T15:42:58ZA Study of the Radial and Azimuthal Gas Distribution in Massive Galaxy ClustersNurgaliev, Daniyar RashidovichAstrophysicsasymmetrydensity profilegalaxy clusterClusters of galaxies are particularly interesting astrophysical systems, are the largest bound structures in the Universe, and contain fair sample of cosmic ingredients. Studies of cluster abundance as a function of mass and redshift were critical in establishing the standard model of cosmology. This dissertation presents results from X-ray imaging of massive distant (M > 10^14 M; 0:3 < z < 1.2) clusters, found via X-ray emission or Sunyaev-Zeldovich eff ect. This is the world's largest sample of massive galaxy clusters. We explore the radial and azimuthal profi les of the X-ray emitting gas and show that clusters are self-similar objects: their internal structure is largely independent of the cluster's mass or redshift, and the fractions of di fferent types of clusters does not change with redshift. We also present a new statistical technique for measuring a cluster's deviations from a perfect axisymmetric shape, which is especially useful in the case of low photon count observations of distant clusters.PhysicsStubbs, Christopher William2014-06-07T01:13:42Z2014-06-0620132014-06-07T01:13:42ZThesis or DissertationNurgaliev, Daniyar Rashidovich. 2014. A Study of the Radial and Azimuthal Gas Distribution in Massive Galaxy Clusters. Doctoral dissertation, Harvard University.http://dissertations.umi.com/gsas.harvard:11514http://nrs.harvard.edu/urn-3:HUL.InstRepos:12274621en_USopenhttp://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAAHarvard University |
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Astrophysics asymmetry density profile galaxy cluster |
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Astrophysics asymmetry density profile galaxy cluster Nurgaliev, Daniyar Rashidovich A Study of the Radial and Azimuthal Gas Distribution in Massive Galaxy Clusters |
description |
Clusters of galaxies are particularly interesting astrophysical systems, are the largest bound structures in the Universe, and contain fair sample of cosmic ingredients. Studies of cluster abundance as a function of mass and redshift were critical in establishing the standard model of cosmology. This dissertation presents results from X-ray imaging of massive distant (M > 10^14 M; 0:3 < z < 1.2) clusters, found via X-ray emission or Sunyaev-Zeldovich eff ect. This is the world's largest sample of massive galaxy clusters. We explore the radial and azimuthal profi les of the X-ray emitting gas and show that clusters are self-similar objects: their internal structure is largely independent of the cluster's mass or redshift, and
the fractions of di fferent types of clusters does not change with redshift. We also present a
new statistical technique for measuring a cluster's deviations from a perfect axisymmetric
shape, which is especially useful in the case of low photon count observations of distant
clusters. === Physics |
author2 |
Stubbs, Christopher William |
author_facet |
Stubbs, Christopher William Nurgaliev, Daniyar Rashidovich |
author |
Nurgaliev, Daniyar Rashidovich |
author_sort |
Nurgaliev, Daniyar Rashidovich |
title |
A Study of the Radial and Azimuthal Gas Distribution in Massive Galaxy Clusters |
title_short |
A Study of the Radial and Azimuthal Gas Distribution in Massive Galaxy Clusters |
title_full |
A Study of the Radial and Azimuthal Gas Distribution in Massive Galaxy Clusters |
title_fullStr |
A Study of the Radial and Azimuthal Gas Distribution in Massive Galaxy Clusters |
title_full_unstemmed |
A Study of the Radial and Azimuthal Gas Distribution in Massive Galaxy Clusters |
title_sort |
study of the radial and azimuthal gas distribution in massive galaxy clusters |
publisher |
Harvard University |
publishDate |
2014 |
url |
http://dissertations.umi.com/gsas.harvard:11514 http://nrs.harvard.edu/urn-3:HUL.InstRepos:12274621 |
work_keys_str_mv |
AT nurgalievdaniyarrashidovich astudyoftheradialandazimuthalgasdistributioninmassivegalaxyclusters AT nurgalievdaniyarrashidovich studyoftheradialandazimuthalgasdistributioninmassivegalaxyclusters |
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1716816924426371072 |