A 5-GHz interferometer for microwave background studies

Details A 5-GHz interferometer for microwave background studies A 5-GHz interferometer for microwave background studies

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997mnras.286...48m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 286, Issue 1, pp. 48-57.

Astronomy and Astrophysics

Astronomy

10

Atmospheric Effects, Methods: Observational, Cosmic Microwave Background, Cosmology: Observations

Scientific paper

A description is given of a 5-GHz two-element very short baseline interferometer operated at Jodrell Bank for degree-scale studies of Galactic, point source and intrinsic cosmic microwave background emission. This is a high-sensitivity interferometer with 20-K system noise and a bandwidth of nearly 350 MHz. Its phase stability from day to day is better than 2 deg and allows independent data from separate days to be stacked. The interferometer gives receiver noise limited performance with an rms of 25muK in 2min (0 deg.5 in RA) from 26d of data. The performance of the interferometer is illustrated with observations at Dec. = 40 deg for baselines of 11lambda and 30lambda. The astronomical potential of the interferometer is described.

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