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Title:
CMB Foreground Surveys with the New Sensitive Wideband Continuum Backend on the Green Bank Telescope
Authors:
Mason, B.; Weintraub, L.; Pearson, T.; Sievers, J.; Shepherd, M.; Readhead, A.
Affiliation:
AA(NRAO), AB(Caltech), AC(Caltech), AD(CITA), AE(Caltech), AF(Caltech)
Publication:
American Astronomical Society Meeting 207, #170.13; Bulletin of the American Astronomical Society, Vol. 37, p.1429
Publication Date:
12/2005
Origin:
AAS
Bibliographic Code:
2005AAS...20717013M

Abstract

The California Institute of Technology and the National Radio Astronomy Observatory have constructed a new continuum backend for use with the 26 to 40 GHz pseudo-correlation receiver on the Green Bank Telescope (GBT). The backend simultaneously measures RF power across the full 14 GHz receiver band in two feeds and two polarizations, and is capable of executing a rapid beam switch to suppress the effects of receiver gain fluctuations. Combined with the GBT's large and excellent surface the CCB will give unprecedented cm-wave sensitivity to study CMB discrete-source foregrounds and very small-scale anisotropies. We present an overview of the instrument and our early science program, which aims to more precisely measure the small-scale excess power seen by the Cosmic Background Imager.
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