Microwave bursts of November 17, 1991: evidence of fragmented particle injection into a coronal loop

Details Microwave bursts of November 17, 1991: evidence of fragmented particle injection into a coronal loop Microwave bursts of November 17, 1991: evidence of fragmented particle injection into a coronal loop

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ssrv...68..205f&link_type=abstract

Space Science Reviews, Volume 68, Issue 1-4, pp. 205-210

Physics

5

Scientific paper

The unusual event of November 17, 1991 07:04 UT, observed at 2.5 and 2.85 GHz, is analysed. The event reveals the sophisticated superfine time structure including sudden reductions and quasi-periodic pulsations. We shown that the sudden reductions (≈30 100 ms) can be driven by upward injected ≳100 keV electron beams filling the losscone of the coronal magnetic trap. The nonlinear oscillations of Langmuir waves provide the best fit for the pulsation observed. A reduced steady-state level of the pulsation phase is connected with quasi-continuous injection of electrons. The physical parameters of the radio source are found for the event.

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