Journal
ASTROPHYSICAL JOURNAL
Volume 770, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/770/2/112
Keywords
galaxies: clusters: general
Categories
Funding
- Gordon and Betty Moore Foundation
- Kenneth T. and Eileen L. Norris Foundation
- James S. McDonnell Foundation
- Associates of the California Institute of Technology
- University of Chicago
- state of California
- state of Illinois
- state of Maryland
- National Science Foundation
- National Science Foundation at the University of Chicago [AST-0838187]
- CARMA
- NSF Physics Frontier Center grant [PHY-1125897]
- NASA through Hubble Fellowship grant [HST-HF-51259.01]
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1140063, 1140031] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1139950, 1140019, 0838187] Funding Source: National Science Foundation
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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.
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