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ISSN Печать: 0040-2508
ISSN Онлайн: 1943-6009
Indexed in
On the Velocity of Beam Generating Fast-Drift Radio Bursts in Solar Corona
Краткое описание
It is shown that the data on drift velocities of III type radio bursts and the velocities of II-type HB-burst components (of herring-bone structure) are not contradictory to the views of free electron-beam expansion in the solar corona if the low-speed Coulomb electron scattering is taken account of. The findings of the kinetic theory suggest that the characteristic average drift velocity is largely dependent upon the height of beam initiation and, consequently, upon the plasma density at the point of its origin. This, to a large extent, results in the difference between the velocities of the beams generated by chromospheric bursts and the beams being produced at shock wave fronts in the solar corona.