Mathematics – Logic
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1772m&link_type=abstract
Chandra Proposal ID #06800018
Mathematics
Logic
Chandra Proposal Id #06800018
Scientific paper
We request Chandra observations of a complete sample of z>0.35 galaxy clusters from the 400 Square Degrees ROSAT PSPC Survey. The goal of this GTO program is to collect ACIS-I data for the entire sample with at least 20 ksec exposures. The data will be used to measure accurate X-ray luminosities and estimate the gas mass within 1Mpc. These parameters will be used as proxies for the total virial mass which will lead to preliminary estimates of the mass functions in several redshift bins. The evolution of the mass function will place contraints on several cosmological parameters. There is the accompanying GO proposal (PI Vikhlinin) to observe the same sample with longer exposures to improve reliability of the cosmological measurements. Our GTO and GO programs are not in conflict.
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