Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21441503k&link_type=abstract
American Astronomical Society, AAS Meeting #214, #415.03; Bulletin of the American Astronomical Society, Vol. 41, p.682
Astronomy and Astrophysics
Astronomy
Scientific paper
Combining multiwavelength data for a single relaxed cluster of galaxies can yield powerful constraints on its dark matter distribution and on the equation of state of the intracluster plasma. Using JACO, a codebase for simultaneous modeling of multi-mission X-ray, Sunyaev-Zel'dovich, and weak gravitational lensing data, dark matter profiles for approximately 40 intermediate redshift galaxies clusters (z= 0.2 - 0.5) have been deduced. We use both Chandra and XMM-Newton for X-ray, CFHT for weak lensing, and CBI for the SZ effect. Global gas entropy and pressure profiles combining both Chandra and XMM-Newton reveal the thermodynamic state of the gas over more decades in radius than would be possible with either mission in isolation. I will show results from the joint analysis, and discuss the power of combined X-ray and weak-lensing analysis in recovering the concentrations of relaxed cluster dark matter halos.
Babul Arif
Henry Jean
Hoekstra Henk
Krok Michelle
Mahdavi Andisheh
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