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Australia Telescope Search for Cosmic Microwave Background Anisotropy | | Ravi Subrahmanyan
; Michael J. Kesteven
; Ronald D. Ekers
; Malcolm Sinclair
; Joseph Silk
; | | Date: |
19 May 1998 | | Journal: | Mon.Not.Roy.Astron.Soc. 315 (2000) 808 | | Subject: | astro-ph | | Abstract: | We have made an 8.7 GHz image of a sky region with a resolution of 8 arcmin and high brightness sensitivity using the Australia Telescope Compact Array (ATCA). in an ultra compact configuration. The foreground discrete-source confusion was estimated from observations with higher resolution at the same frequency and in a scaled array at a lower frequency. Following the subtraction of the foreground confusion, the field shows no features in excess of the instrument noise. This limits the CMB anisotropy flat-band power to Q_flat < 23.6 microK with 95 per cent confidence; the ATCA filter function F_l in multipole l-space peaks at l_eff = 4700 and has half maximum values at l = 3350 and 6050. | | Source: | arXiv, astro-ph/9805245 | | Services: | Forum | Review | PDF | Favorites | |
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