AMiBA Observations, Data Analysis and Results for Sunyaev-Zel'dovich Effects
Abstract
We present observations, analysis and results for the first-year operation of AMiBA, an interferometric experiment designed to study cosmology via the measurement of Cosmic Microwave Background (CMB). AMiBA is the first CMB interferometer operating at 3 mm to have reported successful results, currently with seven close-packed antennas of 60-cm diameter giving a synthesized resolution of around 6'. During 2007 AMiBA detected the Sunyaev-Zel'dovich effects (SZE) of six galaxy clusters at redshift 0.091 <= z <= 0.322. An observing strategy with on-off-source switching is used to minimize the effects from electronic offset and ground pickup. Planets were used to test the observational capability of AMiBA and to calibrate the conversion from correlator time-lag data to visibilities. The detailed formalism for data analysis is given. We summarize our early tests including observations of planets and quasars, and present images, visibility profiles, the estimated central coordinates, sizes, and SZE amplitudes of the galaxy clusters. Science results are summarized. We also discuss possible systematic effects in the results.
Keywords
Cite
@article{arxiv.0810.1015,
title = {AMiBA Observations, Data Analysis and Results for Sunyaev-Zel'dovich Effects},
author = {J. -H. P. Wu and P. T. P. Ho and C. -W. L. Huang and P. M. Koch and Y. -W. Liao and K. -Y. Lin and G. -C. Liu and S. M. Molnar and H. Nishioka and K. Umetsu and F. -C. Wang and P. Altamirano and M. Birkinshaw and C. -H. Chang and S. -H. Chang and S. -W. Chang and M. -T. Chen and T. Chiueh and C. -C. Han and Y. -D. Huang and Y. -J. Hwang and H. Jiang and M. Kesteven and D. Y. Kubo and K. Lancaster and C. -T. Li and P. Martin-Cocher and P. Oshiro and P. Raffin and T. Wei and W. Wilson},
journal= {arXiv preprint arXiv:0810.1015},
year = {2009}
}
Comments
Accepted by ApJ (Dec.23, 2008); 11 pages, 9 figures, 6 tables