Atmospheric Fluctuations in the Millimeter Wavelength at the South Pole

Details Atmospheric Fluctuations in the Millimeter Wavelength at the South Pole Atmospheric Fluctuations in the Millimeter Wavelength at the South Pole

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...20314403b&link_type=abstract

American Astronomical Society Meeting 203, #144.03; Bulletin of the American Astronomical Society, Vol. 36, p.589

Astronomy and Astrophysics

Astrophysics

Scientific paper

We characterize atmospheric fluctuations by a Kolmogorov power law around the South pole at Millimeter wavelengths by calculating the correlation between signals coming from two separate channels in a detector array. We use data taken with the ACBAR instrument mounted on the Viper telescope over the winter period beginning in April 2002 and ending in August 2002 to generate a model of the atmospheric fluctuations. We use this model to obtain values for the amplitude of the atmospheric fluctuations as well as the angular windspeed causing the movement of the disturbances which are responsible for the emission we observe. The primary benefit of the correlation analysis is to significantly reduce contribution from instrument noise, which is uncorrelated between two channels. Thus we are able to perform a very reliable characterization of the atmosphere.
ACBAR was supported by funds from the Center for Astrophysical Research in Antarctica, a National Science Foundation Science and Technology Center. Operational support was provided by the United States Antarctic Program.

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