The Nature of Cold Fronts in Galaxy Clusters

Details The Nature of Cold Fronts in Galaxy Clusters The Nature of Cold Fronts in Galaxy Clusters

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cxo..prop.1568d&link_type=abstract

Chandra Proposal ID #05800541

Physics

Chandra Proposal Id #05800541

Scientific paper

Cold Fronts are sharp gas density and temperatures discontinuities observed in some galaxy clusters. Models for their origin involve either external mechanisms, such as accretion of galaxy groups, or internal mechanisms, such as the gas response to the oscillation of the cD about the cluster's center. These mechanisms can be distinguished by measuring the metal abundances and abundance ratios across the fronts. Previous observations did not have adequate S/N to perform such an analysis, so here we propose longer observations to carry out a detailed spectroscopic study of cold fronts in the two best clusters: A496 and A1795. Chandra is the only instrument that has both the spectral and angular resolution required to study cold fronts.

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