Computer Science – Sound
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ijimw...8.1541r&link_type=abstract
International Journal of Infrared and Millimeter Waves (ISSN 0195-9271), vol. 8, Dec. 1987, p. 1541-1556.
Computer Science
Sound
8
C-141 Aircraft, Carbon Monoxide, Heterodyning, Molecular Spectra, Submillimeter Waves, Superheterodyne Receivers, Airborne Equipment, Atmospheric Sounding, Intermediate Frequencies, Schottky Diodes
Scientific paper
A compact heterodyne receiver system used in the Kuiper Airborne Observatory is described, and calibration techniques for the elimination of standing wave effects are discussed. Results for the detection of the J = 7-6 rotational transition of CO in OMC-1 and W3 are presented. The peak antenna temperature of OMC-1 is 55 K, and the relatively high total line flux of 7.8 x 10 to the -13th W/sq m suggests that OMC-1 might be extended over several arcmin in CO (J = 7-6). In W3, the peak antenna temperature is found to be 6 + or - 2 K, with the line center at -42 + or - 2 km/sec and a FWHM of about 9 km/sec.
Roeser Hans-Peter
Schaefer Frank
Schmid-Burgk Johannes
Schultz G. V.
van der Wal Peter
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