A study of x-ray substructure in rich clusters of galaxies

A comparison of three tests to determine substructure in rich Abell clusters of galaxies was preformed and the results are presented in this paper. The data used are ROSAT PSPC X-ray images of a sample of 21 clusters drawn from the ACO catalog, and a subset of the ESO Nearby Abell Cluster Survey done by Katgert et, al. The three methods used are: the 'center shift' method developed by Mohr et al., the 'moment' method developed by Buote & Tsai and a wavelet analysis developed by Starck et al. Models were then created to check the significance of our findings. The conclusions reached were that substructure and cooling flows are present in at least 50% of our sample. In addition, although it is possible to get a generally accurate result using only one of the above methods, the use of a multi-pronged analysis approach to achieve maximum accuracy is desirable.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Physics

Grantor dc:publisher

University of Nevada, Las Vegas

Year

1998

Author dc:creator

• Rogers, Philip Leroy

Contributors dc:contributor

• George Rhee

Statement dc:rights

• IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

Identifier

https://oasis.library.unlv.edu/rtds/895

OAI identifier oai:identifier

oai:oasis.library.unlv.edu:rtds-1894