A submillimeter VLBI array
نویسندگان
چکیده
منابع مشابه
The Submillimeter Array Polarimeter
We describe the Submillimeter Array (SMA) Polarimeter, a polarization converter and feed multiplexer installed on the SMA. The polarimeter uses narrow-band quarter-wave plates to generate circular polarization sensitivity from the linearly-polarized SMA feeds. The wave plates are mounted in rotation stages under computer control so that the polarization handedness of each antenna is rapidly sel...
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We constructed a 24-pixel bolometer camera operating in the 350- and 450-μm atmospheric windows for the Caltech Submillimeter Observatory (CSO). This instrument uses a monolithic silicon bolometer array that is cooled to approximately 300 mK by a single-shot (3)He refrigerator. First-stage amplification is provided by field-effect transistors at approximately 130 K. The sky is imaged onto the b...
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Heterodyne receivers at submillimeter wavelengths have played a major role in astrophysics as well as earth and planetary remote sensing. For astrophysics, the submillimeter is the primary frequency range for line and continuum radiation from cool gas and dust. It is useful for studying star formation, galaxies, dust and gas chemistry, and cosmology and CMB physics; heterodyne receivers have be...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2008
ISSN: 1742-6596
DOI: 10.1088/1742-6596/131/1/012047