Pulsations of type IV solar radio emission: the bounce-resonance effects: The bounce-resonance effects

BI Meerson, PV Sasorov, AV Stepanov

Research output: Contribution to journalArticlepeer-review

73 Scopus citations

Abstract

. A mechanism of excitation of radial oscillations of a 'magnetic tube' is proposed for the
interpretation of a periodic modulation of type IV radio burst intensity in the meter and decimeter
range. After the flare a configuration with denser plasma extended along the magnetic field can be
formed in the corona. Eigenoscillations of such a system are damped by MHD-wave emission into the
external coronal plasma. However, if high energy protons with B ~> 0.2 are trapped by this configuration,
the damping of oscillations can be made up for by an amplification due to bounce'-resonant plasma
instability. The regularity of the pulse period is explained by presence of a maximum in the wave growth
rate dependence on the frequency.
Original languageAmerican English
Pages (from-to)165-179
Number of pages15
JournalSolar Physics
Volume58
Issue number1
StatePublished - 1978

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