Published June 10, 2010 | Version v1
Journal article Metadata-only

IMPLICATIONS OF A HIGH ANGULAR RESOLUTION IMAGE OF THE SUNYAEV-ZEL'DOVICH EFFECT IN RXJ1347-1145

Creators

  • 1. National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States)
  • 2. University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States)
  • 3. Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei 10617, Taiwan (China)
  • 4. The Canadian Institute of Theoretical Astrophysics, 60 St. George Street, Toronto, Ontario M5S 3H8 (Canada)
  • 5. NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
  • 6. National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80303 (United States)
  • 7. School of Physics and Astronomy, Cardiff University, 5 The Parade, Cardiff CF24 3AA (United Kingdom)

Description

The most X-ray luminous cluster known, RXJ1347-1145 (z = 0.45), has been the object of extensive study across the electromagnetic spectrum. We have imaged the Sunyaev-Zel'dovich effect (SZE) at 90 GHz (λ = 3.3 mm) in RXJ1347-1145 at 10'' resolution with the 64 pixel MUSTANG bolometer array on the Green Bank Telescope, confirming a previously reported strong, localized enhancement of the SZE 20'' to the southeast of the center of X-ray emission. This enhancement of the SZE has been interpreted as shock-heated (>20 keV) gas caused by an ongoing major (low mass ratio) merger event. Our data support this interpretation. We also detect a pronounced asymmetry in the projected cluster pressure profile, with the pressure just east of the cluster core ∼1.6x higher than just to the west. This is the highest resolution image of the SZE made to date.

Availability note (English)

Available from http://dx.doi.org/10.1088/0004-637X/716/1/739

Additional details

Identifiers

DOI
10.1088/0004-637X/716/1/739;

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
716
Journal Issue
1
Journal Page Range
p. 739-745
ISSN
0004-637X
CODEN
ASJOAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
42046009
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
ASYMMETRY; BACKGROUND RADIATION; BOLOMETERS; COSMOLOGY; GALAXY CLUSTERS; TELESCOPES; X RADIATION
Descriptors DEC
ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; MEASURING INSTRUMENTS; RADIATIONS