Carma measurements of the Sunyaev-Zel'dovich effect in RX J1347.5-1145

Thomas J. Plagge, Daniel P. Marrone, Zubair Abdulla, Massimiliano Bonamente, John E. Carlstrom, Megan Gralla, Christopher H. Greer, Marshall Joy, James W. Lamb, Erik M. Leitch, Adam Mantz, Stephen Muchovej, David Woody

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


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.

Original languageEnglish (US)
Article number112
JournalAstrophysical Journal
Issue number2
StatePublished - Jun 20 2013


  • galaxies: clusters: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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