Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...716..739m&link_type=abstract
The Astrophysical Journal, Volume 716, Issue 1, pp. 739-745 (2010).
Astronomy and Astrophysics
Astronomy
24
Cosmic Background Radiation, Cosmology: Observations, Galaxies: Clusters: Individual: Rxj1347–1145
Scientific paper
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 ~1.6× higher than just to the west. This is the highest resolution image of the SZE made to date.
Ade Peter
Aguirre James E.
Benford Dominic
Cotton William D.
Devlin Mark J.
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