Physics
Scientific paper
Jul 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atnf.prop.2499m&link_type=abstract
ATNF proposal C1422, Semester: July, 2009
Physics
Extragalactic, Atca
Scientific paper
We propose the observation of the Sunyaev-Zel'dovich effect (SZE) substructure in the high redshift (z = 0.834) cluster of galaxies ClJ0152-1357 with the full 4 GHz CABB at 20 GHz. The cluster showed a complex structure, indicative of an early stage of formation. We will examine the distribution of the intra-cluster gas and compare it with XMM-Chandra observations to constrain the gas mass of the cluster and the baryon fraction, to confirm (and improve) the results obtained in the observations we carried out in 2005 with the ATCA: after the combination of data from BIMA we detected an SZ signal at the 5.6 S/N level which was significantly displaced from the X-ray peak in the direction of one of the sub-clumps. A more detailed observation may help to investigate the physical reasons of such an unexpected displacement (merging, temperature distribution...). We request 48 hours observation time with the CABB system (24 hours with higher priority). We obtained allocated time for the APR2008 period, exploiting the CABB system. Due to the delays with the interim CABB installation we were not able to use it and gave back the allocated time.
Ekers Ron
Ellis Simon
Massardi Marcella
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