Published April 1, 2012
| Published
Journal Article
Open
Joint Analysis of X-Ray and Sunyaev-Zel'dovich Observations of Galaxy Clusters Using an Analytic Model of the Intracluster Medium
- Creators
- Hasler, Nicole
- Bulbul, Esra
- Bonamente, Massimiliano
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Carlstrom, John E.
- Culverhouse, Thomas L.
- Gralla, Megan
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Greer, Christopher
- Hawkins, David
- Hennessy, Ryan
- Joy, Marshall
- Kolodziejczak, Jeffrey
- Lamb, James W.
- Landry, David
- Leitch, Erik M.
- Mantz, Adam
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Marrone, Daniel P.
- Miller, Amber
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Mroczkowski, Tony
- Muchovej, Stephen
- Plagge, Thomas
- Pryke, Clem
- Woody, David
Abstract
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.
Additional Information
© 2012 American Astronomical Society. Received 2011 April 24; accepted 2012 January 18; published 2012 March 14. The operation of the SZA is supported by the NSF through grants AST-0604982 and AST-0838187. Partial support is also provided from the grant PHY-0114422 at the University of Chicago, and by NSF grants AST-0507545 and AST-05-07161 to Columbia University. CARMA operations are supported by the NSF under a cooperative agreement, and by the CARMA partner universities. S.M. acknowledges support from an NSF Astronomy and Astrophysics Fellowship; C.G. and S.M. from NSF Graduate Research Fellowships; and D.P.M. from the NASA Hubble Fellowship grant HF-51259.01. Support for this work was provided for T.M. by NASA through the Einstein Fellowship Program, grant PF0-110077.Attached Files
Published - Hasler2012p18027Astrophys_J.pdf
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Additional details
- Eprint ID
- 31346
- Resolver ID
- CaltechAUTHORS:20120508-095414829
- AST-0604982
- NSF
- AST-0838187
- NSF
- PHY-0114422
- NSF
- AST-0507545
- NSF
- AST-05-07161
- NSF
- CARMA partner universities
- NSF Astronomy and Astrophysics Fellowship
- HF-51259.01
- NASA Hubble Fellowship
- PF0-110077
- NASA Einstein Fellowship
- Created
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2012-05-08Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field