Graduation Year


Date of Submission


Document Type

Open Access Senior Thesis

Degree Name

Bachelor of Arts



Reader 1

Rachel Paterno-Mahler

Reader 2

Janet Sheung

Terms of Use & License Information

Terms of Use for work posted in Scholarship@Claremont.

Rights Information

© 2020 Anne C. J. Poy


Galaxy clusters are the largest gravitationally bound objects in the Universe. Studying them can teach us about how they merge and grow, which in turn provides unparalleled information about the history of the evolution of the Universe. X-ray observations of galaxy clusters have uncovered substructure in the hot, X-ray emitting gas known as the intracluster mediums (ICM). Substructure indicates that the ICM has been churned up, possibly by a significant off-axis merger event. This substructure includes cold fronts, sloshing spirals, and shocks. We present deep Chandra observations of the merging cluster Abell 2163. We investigate the global spectrum and find that a single temperature plasma model with temperature $kT = 21.93_{-1.03}^{+0.97}$ keV is the best fit for this cluster. These observations reveal a surface brightness discontinuity. A surface brightness profile and temperature profile show that this surface brightness discontinuity is a cold front.