Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Udomprasert, P. S."'
Publikováno v:
Astrophys.J. 615 (2004) 63-81
We present Ho results from Cosmic Background Imager (CBI) observations of the Sunyaev-Zel'dovich Effect (SZE) in 7 galaxy clusters, A85, A399, A401, A478, A754, A1651, and A2597. These observations are part of a program to study a complete, volume-li
Externí odkaz:
http://arxiv.org/abs/astro-ph/0408005
Autor:
Readhead, A. C. S., Mason, B. S., Contaldi, C. R., Pearson, T. J., Bond, J. R., Myers, S. T., Padin, S., Sievers, J. L., Cartwright, J. K., Shepherd, M. C., Pogosyan, D., Prunet, S., Altamirano, P., Bustos, R., Bronfman, L., Casassus, S., Holzapfel, W. L., May, J., Pen, U. -L., Torres, S., Udomprasert, P. S.
Publikováno v:
Astrophys.J. 609 (2004) 498-512
Two years of microwave background observations with the Cosmic Background Imager (CBI) have been combined to give a sensitive, high resolution angular power spectrum over the range 400 < l < 3500. This power spectrum has been referenced to a more acc
Externí odkaz:
http://arxiv.org/abs/astro-ph/0402359
Autor:
Bond, J. R., Contaldi, C. R., Pen, U. -L., Pogosyan, D., Prunet, S., Ruetalo, M. I., Wadsley, J. W., Zhang, P., Mason, B. S., Myers, S. T., Pearson, T. J., Readhead, A. C. S., Sievers, J. L., Udomprasert, P. S.
Publikováno v:
Astrophys.J. 626 (2005) 12
We discuss the nature of the possible high-l excess in the Cosmic Microwave Background (CMB) anisotropy power spectrum observed by the Cosmic Background Imager (CBI). We probe the angular structure of the excess in the CBI deep fields and investigate
Externí odkaz:
http://arxiv.org/abs/astro-ph/0205386
Autor:
Sievers, J. L., Bond, J. R., Cartwright, J. K., Contaldi, C. R., Mason, B. S., Myers, S. T., Padin, S., Pearson, T. J., Pen, U. -L., Pogosyan, D., Prunet, S., Readhead, A. C. S., Shepherd, M. C., Udomprasert, P. S., Bronfman, L., Holzapfel, W. L., May, J.
Publikováno v:
Astrophys.J.591:599-622,2003
We report on the cosmological parameters derived from observations with the Cosmic Background Imager (CBI), covering 40 square degrees and the multipole range 300 < l < 3500. The angular scales probed by the CBI correspond to structures which cover t
Externí odkaz:
http://arxiv.org/abs/astro-ph/0205387
Autor:
Mason, B. S., Pearson, T. J., Readhead, A. C. S., Shepherd, M. C., Sievers, J. L., Udomprasert, P. S., Cartwright, J. K., Farmer, A. J., Padin, S., Myers, S. T., Bond, J. R., Contaldi, C. R., Pen, U. -L., Prunet, S., Pogosyan, D., Carlstrom, J. E., Kovac, J., Leitch, E. M., Pryke, C., Halverson, N. W., Holzapfel, W. L., Altamirano, P., Bronfman, L., Casassus, S., May, J., Joy, M.
Publikováno v:
Astrophys.J. 591 (2003) 540-555
We report measurements of anisotropy in the cosmic microwave background radiation over the multipole range l ~ 200 - 3500 with the Cosmic Background Imager based on deep observations of three fields. These results confirm the drop in power with incre
Externí odkaz:
http://arxiv.org/abs/astro-ph/0205384
Autor:
Pearson, T. J., Mason, B. S., Readhead, A. C. S., Shepherd, M. C., Sievers, J. L., Udomprasert, P. S., Cartwright, J. K., Farmer, A. J., Padin, S., Myers, S. T., Bond, J. R., Contaldi, C. R., Pen, U. -L., Prunet, S., Pogosyan, D., Carlstrom, J. E., Kovac, J., Leitch, E. M., Pryke, C., Halverson, N. W., Holzapfel, W. L., Altamirano, P., Bronfman, L., Casassus, S., May, J., Joy, M.
Publikováno v:
Astrophys.J.591:556-574,2003
Using the Cosmic Background Imager, a 13-element interferometer array operating in the 26-36 GHz frequency band, we have observed 40 sq deg of sky in three pairs of fields, each ~ 145 x 165 arcmin, using overlapping pointings (mosaicing). We present
Externí odkaz:
http://arxiv.org/abs/astro-ph/0205388
Autor:
Padin, S., Shepherd, M. C., Cartwright, J. K., Keeney, R. G., Mason, B. S., Pearson, T. J., Readhead, A. C. S., Schaal, W. L., Sievers, J., Udomprasert, P. S., Yamasaki, J. K., Holzapfel, W. L., Carlstrom, J. E., Joy, M., Myers, S. T., Otarola, A.
Publikováno v:
PASP, 114, 83-97, 2002 January
Design and performance details are given for the Cosmic Background Imager (CBI), an interferometer array that is measuring the power spectrum of fluctuations in the cosmic microwave background radiation (CMBR) for multipoles in the range 400 < l < 35
Externí odkaz:
http://arxiv.org/abs/astro-ph/0110124
We are engaged in a program with the Cosmic Background Imager (CBI), a 13-element interferometer recently installed at 5000 m in the Chilean Andes, to measure H_0 with 10% accuracy through observations of the Sunyaev-Zel'dovich effect in a sample of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0012248
Autor:
Pearson, T. J., Mason, B. S., Padin, S., Readhead, A. C. S., Shepherd, M. C., Sievers, J., Udomprasert, P. S., Cartwright, J. K.
The Cosmic Background Imager (CBI) is an instrument designed to make images of the cosmic microwave background radiation and to measure its statistical properties on angular scales from about 3 arc minutes to one degree (spherical harmonic scales fro
Externí odkaz:
http://arxiv.org/abs/astro-ph/0012212
Autor:
Padin, S., Cartwright, J. K., Mason, B. S., Pearson, T. J., Readhead, A. C. S., Shepherd, M. C., Sievers, J., Udomprasert, P. S., Holzapfel, W. L., Myers, S. T., Carlstrom, J. E., Leitch, E. M., Joy, M., Bronfman, L., May, J.
Publikováno v:
2001, ApJ, 549, L1-L5
We present the first results of observations of the intrinsic anisotropy of the cosmic microwave background radiation with the Cosmic Background Imager from a site at 5080 m altitude in northern Chile. Our observations show a sharp decrease in C_l in
Externí odkaz:
http://arxiv.org/abs/astro-ph/0012211