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Title: 18 GHz SZ measurements of the bullet cluster
Authors: Malu, S.S.
Subrahmanyan, Ravi
Keywords: Galaxies
radio continuum
individual (1E 0657-56, RX J0658-5557)
Issue Date: Dec-2011
Publisher: Indian Academy of Sciences
Citation: Journal of Astrophysics and Astronomy, 2011, Vol.32, p541
Abstract: We present 18 GHz observations of the Bullet cluster using the Austalia Telescope Compact Array (ATCA), which show structure in the Sunyaev-Zeldovich effect; in particular, a deep, compact feature which does not correspond to any bright feature in X-ray, optical or lensing maps. In general, the relatively deeper SZE features appear to avoid the regions with the most intense X-ray emission. SZE displaced from X-ray centres implies that modeling cluster dynamics is non-trivial. The SZE distribution in the western parts of the cluster are co-spatial with the radio halo indicative of a common origin for the hot and relativistic electrons in the turbulent wake of the Bullet.
Description: Open Access
ISSN: 0250-6335
0973-7758 (Online)
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Copyright: 2011 Indian Academy of Sciences
Appears in Collections:Research Papers (A&A)

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