Radio evidence for shock acceleration of electrons in the solar corona

Journal Article · Tue Dec 01 04:00:00 EST 1981 · Geophys. Res. Lett.; (United States)

DOI:https://doi.org/10.1029/GL008i012p01285· OSTI ID:5729325

Cane, H V; Stone, R G; Fainberg, J; Stewart, R T; Steinberg, J L; Hoang, S

A new class of kilometer wavelength solar radio bursts has been observed with the ISEE-3 Radio Astronomy Experiment. These events resemble groups of ordinary type III bursts but have some unique properties. They are very intense and have durations considerably longer than groups of type III bursts. The new class of events do not necessarily occur at the times of reported meter wavelength type III activity and therefore do not appear to be the continuation of such activity to long wavelengths. Instead they occur at the reported times of type II events, which are indicative of a shock wave. An examination of records from the Culgoora Radio Observatory shows that the associated type II bursts have fast drift elements emanating from them i.e. herringbone structure. It is proposed that the new class of bursts are the long wavelength continuation of herringbone structure and it seems probable that the electrons producing the radio emission are accelerated by shocks. The new type of events will be referred to as shock accelerated (SA) events. The characteristics of SA events are discussed.

• Research Organization: NASA/Goddard Space Flight Center Greenbelt, Maryland 20771
• OSTI ID: 5729325
• Journal Information: Geophys. Res. Lett.; (United States), Journal Name: Geophys. Res. Lett.; (United States) Vol. 8:12; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

640104* -- Astrophysics & Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATION
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
LEPTONS
PLASMA ACCELERATION
RADIATIONS
RADIOWAVE RADIATION
SHOCK WAVES
SOLAR ACTIVITY
SOLAR CORONA
SOLAR ELECTRONS
SOLAR FLARES
SOLAR PARTICLES
SOLAR RADIATION
SOLAR RADIO BURSTS
SOLAR RADIOWAVE RADIATION
STELLAR RADIATION
TRAPPED ELECTRONS