Cosmic radio noise at high frequencies as observed with ISS-b

Details Cosmic radio noise at high frequencies as observed with ISS-b Cosmic radio noise at high frequencies as observed with ISS-b

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981rarlj..28...35k&link_type=abstract

Radio Research Laboratories, Journal, vol. 28, Mar.-July 1981, p. 35-48.

Computer Science

Sound

1

Cosmic Noise, Electromagnetic Noise Measurement, Galactic Nuclei, Galactic Radio Waves, Noise Temperature, Radio Spectra, Satellite Observation, Circular Orbits, High Frequencies, Ionospheric Sounding, Satellite-Borne Instruments

Scientific paper

Average galactic radio noises are measured using the fixed-frequency receivers on ISS-b at frequencies of 5, 10, and 25 MHz. The strength of the galactic noise from the center and anti-center of the circular orbit of ISS-b are distinguished by reason that the galactic center is occulted by the earth at a certain position on an orbit. Average brightness temperatures at the frequencies of 5, 10, and 25 MHz are determined at (1.71 + or - 0.48) x 10 to the 6th K, (4.15 + or - 1.05) x 10 to the 5th K, and (3.47 + or - 1.07) x 10 to the 4th K, respectively. The radiated power from the direction of the galactic center is found to be higher than that of the anti-center by about 2.2-3.5 dB at the high frequency band.

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