Radio observations of Comet Halley at 22 and 43 GHz

Details Radio observations of Comet Halley at 22 and 43 GHz Radio observations of Comet Halley at 22 and 43 GHz

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986stin...8714224s&link_type=abstract

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Physics

Continuous Spectra, Halley'S Comet, Line Spectra, Radio Emission, Radio Observation, Cometary Atmospheres, Ice Nuclei, Molecular Flow, Thermal Emission

Scientific paper

Radio continuum and water molecular line observations of Comet Halley were carried out at Itapetinga Radio Observatory; for the first time radio continuum emission from the comet was detected at 22 and 43 GHz. It was prominent when the comet was approaching the Earth after perihelium passage. The signal was time variable. The observed flux densities can be explained as the thermal emission from the ice grains that form the halo, with a radius of 1000 km and grain temperature of 300 K. No line emission was detected at 22 GHz.

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