Physics
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993soph..145..317k&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 145, no. 2, p. 317-338.
Physics
6
Coronal Loops, Cyclotron Radiation, Magnetic Flux, Maser Outputs, Solar Flares, Cyclotron Resonance, Ray Tracing, Solar Magnetic Field, Stellar Models
Scientific paper
An analysis of maser radiation absorption and propagation is presented with the objective of determining the possibility of maser radiation escape leading to microwave bursts. The numerical model employs two-dimensional raytracing of maser radiation in a coronal flux loop and allows the investigation of radiation propagation and absorption in a realistic geometry. The theory of loss-cone-driven electron cyclotron maser emission is discussed and a description of the radiation absorption is given. The physical conditions necessary for the existence of propagation paths allowing radiation escape are identified. Results indicate that conditions are much more limiting for maser radiation in the extraordinary (x) mode than for the ordinary (o) mode. Escaping x-mode radiation may be highly directional while o-mode radiation escapes over a wide range of directions.
Kuncic Zdenka
Robinson Adam P.
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