The uncertainty on the temperature of the Cosmic Microwave Background (CMB) measured below 1 GHz is larger than 30\%. To improve our knowledge it is necessary to perform measurements at different wavelengths and directions, to disentangle the various components of the antenna temperature (CMB, Galaxy, unresolved sources, atmosphere, ground). In this contribution we briefly describe the apparatus of TRIS EXPERIMENT, the observation strategy, calibration techniques and results of extensive tests.
Zannoni, M., Boella, G., Bonelli, G., Cavaliere, F., Gervasi, M., Lagostina, A., et al. (1999). TRIS Experiment: A Search for Spectral Distortions in the CMB Spectrum Close to 1 GHz. In 3 K COSMOLOGY: EC-TMR Conference (pp.165-173). America Institue of Physics.
TRIS Experiment: A Search for Spectral Distortions in the CMB Spectrum Close to 1 GHz
ZANNONI, MARIO;BOELLA, GIULIANO FILIPPO;GERVASI, MASSIMO;PASSERINI, ANDREA;SIRONI, GIORGIO;
1999
Abstract
The uncertainty on the temperature of the Cosmic Microwave Background (CMB) measured below 1 GHz is larger than 30\%. To improve our knowledge it is necessary to perform measurements at different wavelengths and directions, to disentangle the various components of the antenna temperature (CMB, Galaxy, unresolved sources, atmosphere, ground). In this contribution we briefly describe the apparatus of TRIS EXPERIMENT, the observation strategy, calibration techniques and results of extensive tests.
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