2f/sub p/ circumsterrestrial radio radiation as seen from ISEE 3

Journal Article · Mon Jun 01 04:00:00 EDT 1981 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA086iA06p04531· OSTI ID:5988988

Hoang, S; Fainberg, J; Steinberg, J L; Stone, R G; Zwickl, R H

Narrow band radio emissions are observed with the radio astronomy experiment on ISEE 3 from a position 0.01 AU upstream of the earth. These are interpreted as radio line emission generated at twice the local plasma frequency in the vicinity of the earth's bow shock by energetic particles. The frequency of the 2f/sub p/ radio emission is well correlated to large scale density changes observed by both the LASL plasma experiment and the radio experiment at ISEE 3, about one hour earlier in accordance with the transit time of the solar wind to the bow shock region. The bandwidth of the 2f/sub p/ emission varies from less than 3 kHz to more than 20 kHz and is likely broadened by solar wind density variations across the source region. The 2f/sub p/ source is visible about 50% of the time and the position of its centroid is usually located within 30 R/sub E/ of the subsolar point, but at times is observed at a distance of up to 60 R/sub E/. However, these positions may have systematic errors if significant linear polarization is present in the observed radiation or if refraction takes place along the ray path. Intensity variations of 20 db and apparent motions of 40 R/sub E/ can occur with time scales of minutes.

• Research Organization: Department de Recherche Spatiale, Observatoire de Paris, 92190 Meudon, France
• OSTI ID: 5988988
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 86:A6; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640203* -- Atmospheric Physics-- Magnetospheric Phenomena-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BACKSCATTERING
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
INTERPLANETARY SPACE
MAGNETOSHEATH
MAGNETOSPHERE
PLASMA DENSITY
RADIATIONS
RADIOWAVE RADIATION
SCATTERING
SOLAR ACTIVITY
SOLAR WIND
SPACE
WAVE PROPAGATION