Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.207..285k&link_type=abstract
In ESA Plasma Astrophys. p 285-288 (SEE N85-22270 12-90)
Astronomy and Astrophysics
Astronomy
2
Heliosphere, Radio Sources (Astronomy), Solar Radio Emission, Very Low Frequencies, Plasma Waves, Voyager 1 Spacecraft, Voyager 2 Spacecraft
Scientific paper
Evidence of a radio source in the outer heliosphere based on observations made by the plasma wave receivers on Voyagers 1 and 2 at heliocentric radial distances ranging from 13 to 20 AU is given. The radio emission is observed in the frequency range 2 to 3 kHz, and is above the local electron plasma frequency whenever supporting plasma density data are available. The maximum spectral density of the emission is 10 to the minus 14 th power V sq/m/Hz. The bandwidth of the radio noise is 1 kHz. One possible source for the emission is radiation at the second harmonic of the plasma frequency at the heliopause.
Gurnett Donald A.
Kurth Willaim S.
Poynter Robert L.
Scarf Frederick L.
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