Monitoring the 1.667 GHz OH line in Comet Halley

Details Monitoring the 1.667 GHz OH line in Comet Halley Monitoring the 1.667 GHz OH line in Comet Halley

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250c.107g&link_type=abstract

In ESA, Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 3: Posters p 107-108 (SEE N87-26714

Astronomy and Astrophysics

Astronomy

Halley'S Comet, Hydroxyl Emission, Hydroxyl Radicals, Line Spectra, Microwave Spectrometers, Radio Astronomy, Radio Bursts, Space Observations (From Earth)

Scientific paper

Comet Halley was observed whenever it was above -34° declination from 1985 Oct. 5 to 1986 March 26 with a 26 m parabolic antenna and an autocorrelation spectrometer. Spectra covered the velocity range ±5.6 km s-1 with a resolution of 0.18 km s-1. A Gaussian curve was fitted to each daily averaged spectrum to determine peak flux, width and velocity of the 1.667 GHz line whenever signal-to-noise ratio permitted. A plot of peak line flux density against time shows frequent outbursts superimposed on slow variations. Preliminary comparisons with other radio and infrared observations have been made.

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