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CARMA Measurements of the Sunyaev-Zel'dovich Effect in RX J1347.5–1145

Plagge, Thomas J. and Marrone, Daniel P. and Abdulla, Zubair and Bonamente, Massimiliano and Carlstrom, John E. and Gralla, Megan and Greer, Christopher H. and Joy, Marshall and Lamb, James W. and Leitch, Erik M. and Mantz, Adam and Muchovej, Stephen and Woody, David (2013) CARMA Measurements of the Sunyaev-Zel'dovich Effect in RX J1347.5–1145. Astrophysical Journal, 770 (2). Art. No. 112. ISSN 0004-637X. doi:10.1088/0004-637X/770/2/112.

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We demonstrate the Sunyaev-Zel'dovich (SZ) effect imaging capabilities of the Combined Array for Research in Millimeter-wave Astronomy (CARMA) by presenting an SZ map of the galaxy cluster RX J1347.5–1145. By combining data from multiple CARMA bands and configurations, we are able to capture the structure of this cluster over a wide range of angular scales, from its bulk properties to its core morphology. We find that roughly 9% of this cluster's thermal energy is associated with sub-arcminute-scale structure imparted by a merger, illustrating the value of high-resolution SZ measurements for pursuing cluster astrophysics and for understanding the scatter in SZ scaling relations. We also find that the cluster's SZ signal is lower in amplitude than suggested by a spherically symmetric model derived from X-ray data, consistent with compression along the line of sight relative to the plane of the sky. Finally, we discuss the impact of upgrades currently in progress that will further enhance CARMA's power as an SZ imaging instrument.

Item Type:Article
Related URLs:
URLURL TypeDescription DOIArticle
Marrone, Daniel P.0000-0002-2367-1080
Abdulla, Zubair0000-0002-0664-7812
Carlstrom, John E.0000-0002-2044-7665
Greer, Christopher H.0000-0002-9590-0508
Additional Information:© 2013 The American Astronomical Society. Received 2012 March 9; accepted 2013 April 19; published 2013 June 3. We thank Evan Million for providing the X-ray pressure data from Bradač et al. (2008), and Steve Allen for providing the X-ray fit from Allen et al. (2008). We also thank Maruša Bradač and Myriam Gitti for useful discussions. Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Kenneth T. and Eileen L. Norris Foundation, the James S. McDonnell Foundation, the Associates of the California Institute of Technology, the University of Chicago, the states of California, Illinois, and Maryland, and the National Science Foundation. Ongoing CARMA development and operations are supported by the National Science Foundation under a cooperative agreement, including grant AST-0838187 at the University of Chicago, and by the CARMA partner universities. Partial support is provided by NSF Physics Frontier Center grantPHY-1125897 to the Kavli Institute of Cosmological Physics. D.P.M. was supported for part of this work by NASA through Hubble Fellowship grant HST-HF-51259.01. Finally, we thank the CARMA staff for making the 23 element commissioning observations possible. Facility: CARMA.
Funding AgencyGrant Number
NASA Hubble FellowshipHST-HF-51259.01
Subject Keywords:galaxies: clusters: general
Issue or Number:2
Record Number:CaltechAUTHORS:20130722-103105691
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Official Citation:CARMA Measurements of the Sunyaev-Zel'dovich Effect in RX J1347.5–1145 Thomas J. Plagge et al. 2013 ApJ 770 112
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39493
Deposited By: Tony Diaz
Deposited On:22 Jul 2013 21:53
Last Modified:09 Nov 2021 23:45

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