NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Electron acceleration to high energies at quasi-parallel shock waves in the solar coronaIn the solar corona shock waves are generated by flares and/or coronal mass ejections. They manifest themselves in solar type 2 radio bursts appearing as emission stripes with a slow drift from high to low frequencies in dynamic radio spectra. Their nonthermal radio emission indicates that electrons are accelerated to suprathermal and/or relativistic velocities at these shocks. As well known by extraterrestrial in-situ measurements supercritical, quasi-parallel, collisionless shocks are accompanied by so-called SLAMS (short large amplitude magnetic field structures). These SLAMS can act as strong magnetic mirrors, at which charged particles can be reflected and accelerated. Thus, thermal electrons gain energy due to multiple reflections between two SLAMS and reach suprathermal and relativistic velocities. This mechanism of accelerating electrons is discussed for circumstances in the solar corona and may be responsible for the so-called 'herringbones' observed in solar type 2 radio bursts.
Document ID
19960021262
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
Authors
Mann, G.
(Observatorium fuer Solare Radioastronomie Tremsdorf, German Democratic Republic)
Classen, H.-T.
(Observatorium fuer Solare Radioastronomie Tremsdorf, German Democratic Republic)
Date Acquired
August 17, 2013
Publication Date
June 30, 1995
Publication Information
Publication: International Solar Wind 8 Conference
Subject Category
Solar Physics
Accession Number
96N24658
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available