Intracluster Gas Bulk Velocities in the Centaurus Cluster

Details Intracluster Gas Bulk Velocities in the Centaurus Cluster Intracluster Gas Bulk Velocities in the Centaurus Cluster

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cxo..prop.1310d&link_type=abstract

Chandra Proposal ID #04800402

Physics

Chandra Proposal Id #04800402

Scientific paper

We have recently found significant bulk velocities on the order of 2000 km/s in the ICM of 2 galaxy clusters with ASCA. Such high gas velocities have an impact on our our understanding of formation and evolution of clusters of galaxies as well as in determining ICM fundamental physical characteristics such as mass, energy and metal abundances. Therefore, independent confirmation and expansion of this discovery is crucial. The excellent stability of ACIS gain makes Chandra ideal to make such observation. We propose to build a gas velocity map of A3526 by measuring Doppler shifts of X-ray spectral lines at different spatial regions. To eliminate effects of gain fluctuations we ask for 2 consecutive 35 ksec observations offset by 8'.

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