Details

Autor(en) / Beteiligte

• HASLER, Nicole
• BULBUL, Esra
• KOLODZIEJCZAK, Jeffery
• LAMB, James W
• LANDRY, David
• LEITCH, Erik M
• MANTZ, Adam
• MARRONE, Daniel P
• MILLER, Amber
• MROCZKOWSKI, Tony
• MUCHOVEJ, Stephen
• PLAGGE, Thomas
• BONAMENTE, Massimiliano
• PRYKE, Clem
• WOODY, David
• CARLSTROM, John E
• CULVERHOUSE, Thomas L
• GRALLA, Megan
• GREER, Christopher
• HAWKINS, David
• HENNESSY, Ryan
• JOY, Marshall

Titel

JOINT ANALYSIS OF X-RAY AND SUNYAEV-ZEL'DOVICH OBSERVATIONS OF GALAXY CLUSTERS USING AN ANALYTIC MODEL OF THE INTRACLUSTER MEDIUM

Ist Teil von

• The Astrophysical journal, 2012-04, Vol.748 (2), p.1-12

Ort / Verlag

Bristol: IOP

Erscheinungsjahr

2012

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• We perform a joint analysis of X-ray and Sunyaev-Zel'dovich effect data using an analytic model that describes the gas properties of galaxy clusters. The joint analysis allows the measurement of the cluster gas mass fraction profile and Hubble constant independent of cosmological parameters. Weak cosmological priors are used to calculate the overdensity radius within which the gas mass fractions are reported. Such an analysis can provide direct constraints on the evolution of the cluster gas mass fraction with redshift. We validate the model and the joint analysis on high signal-to-noise data from the Chandra X-ray Observatory and the Sunyaev-Zel'dovich Array for two clusters, A2631 and A2204.