Physics
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe..26h&link_type=abstract
Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo
Physics
Galaxy Clusters - Cosmology
Scientific paper
We present a joint Chandra and Sunyaev Zel'dovich Array (SZA) analysis method to determine the gas mass fraction independent of cosmology and demonstrate on Abell 2204. The advantage of using X-ray and Sunyaev Zel'dovich Effect observations is that it allows us to directly determine the angular diameter distance. We use a generalized form of the Navarro-Frenk-White (NFW) dark matter distribution together with a polytropic model for the hot plasma density, to determine an analytical solution for the density and temperature profiles. We then use these models to obtain the cluster mass of Abell 2204 using a Monte Carlo Markov Chain technique, and produce good fits at large radii. This is the first steps towards a measurement of the gas mass fraction as a function of redshift that can be used for the Allen et. al. (2008) method to constrain dark energy.
Bonamente Max
Bulbul Esra
Carlstrom John
Culverhouse Thomas
Hasler Nicole
No associations
LandOfFree
Cosmology Independent Measurement of the Gas Mass Fraction Using Chandra X-ray and Sunyaev-Zel'dovich Effect Measurements of High Redshift Clusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cosmology Independent Measurement of the Gas Mass Fraction Using Chandra X-ray and Sunyaev-Zel'dovich Effect Measurements of High Redshift Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmology Independent Measurement of the Gas Mass Fraction Using Chandra X-ray and Sunyaev-Zel'dovich Effect Measurements of High Redshift Clusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-836457