Vega observations of electric fields and plasma in the Comet Halley environment

Journal Article · Wed Oct 01 04:00:00 EDT 1986 · Sov. Astron. Lett. (Engl. Transl.); (United States)

OSTI ID:5553210

Grard, R; Beghin, C; Mogilevskii, M; Mikhailov, IU; Formisano, V

The APV-V high-frequency plasma-wave analyzers aboard both Vega spacecraft measured electric fields at wave frequencies up to 300 kHz as well as the ambient plasma parameters. Substantial electric-field activity at f of about 100 Hz was detected (2.5-1) x 10 to the 6th km from the nucleus of Comet Halley. Closer to the nucleus the electric-field spectrum developed two maxima, whose evolution along the spacecraft trajectories has been traced. 6 references.

• Research Organization: ESA, Noordwijk, Netherlands; CNRS, Laboratoire de Physique et Chimie de l'Environnement, Orleans, France; Institut Zemnogo Magnetizma Ionosfery i Rasprostraneniia Radiovoln, Troitsk, USSR; CNR, Istituto Plasma Spazio, Frascati, Italy
• OSTI ID: 5553210
• Journal Information: Sov. Astron. Lett. (Engl. Transl.); (United States), Journal Name: Sov. Astron. Lett. (Engl. Transl.); (United States) Vol. 12; ISSN SALED
• Country of Publication: United States
• Language: English

Related Subjects

640107* -- Astrophysics & Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMETS
ELECTRIC FIELDS
ELECTROSTATIC PROBES
HALLEY COMET
PLASMA WAVES
PROBES
SPACE VEHICLES
VEGA SPACE PROBES
VEHICLES