We present an analysis of BeppoSAX observations of the galaxy clusters, Abell 1750 and IC1262. Abell 1750 is a merging double cluster with two distinct X-ray peaks. We report an overall cluster temperature of 4.1 - 4.7 keV, and the discovery of weak non-thermal emission, 3.0-6.0x10-4 erg cm-2 s-1 keV-1 at 1 keV, with a photon index (α x) between 0.9 and 1.6. The non-thermal emission is identified with the region between the two peaks. IC1262 is a cD dominated, X-ray bright, galaxy cluster with a single X-ray peak. We present the first temperature and abudance measurements of this cluster. Two models have been fit to this cluster: a two component Raymond-Smith model and a Raymond-Smith model with a powerlaw. The two component Raymond-Smith model provides a marginally better fit, and gives a high temperature of 2.2 - 3.1 keV, and a low temperature between 0.9 - 1.2 keV. The abundance is constrained between .31 and .65. The Raymond-Smith with powerlaw model gives a temperature of 1.7 - 2.2 keV, an abundance of .62 - 1.46, and a photon index (α x) of 1.8 - 2.9. We discuss the plausibility of the two models, and the possibility that the non-thermal emission could be produced in IC1262's intracluster medium, a feature that is usually associated with much larger, hotter clusters. We thank NSF Grant No. AST-9626716/9996269 for support.
American Astronomical Society Meeting Abstracts
- Pub Date:
- December 2001