The 1.0-4.5 GHz Zebras in the June 6, 2000 Flare
Abstract
For the first time we are reporting harmonically related zebra structures above 1000 MHz, having ratio of 1:2. Zebra structures show up to 8 zebra lines. In individual zebra patterns the frequency ratio of the neighbouring zebra lines are less than 1.03 and these ratios decrease with the frequency decrease. The zebra patterns are analyzed and interpreted assuming double plasma resonance instability as the cause for their generation. The longitudinal upper hybrid waves are excited at positions of cyclotron resonances and then transformed into electromagnetic ones. Using this model the magnetic field strengths in the flaring loops are estimated in the range of 110-230 G.
- Publication:
-
Multi-Wavelength Observations of Coronal Structure and Dynamics
- Pub Date:
- January 2002
- Bibcode:
- 2002mwoc.conf..315S