301. Bastille Day Flare Multi-Spectral Characterization of Radio Emission Polarization from Milliseconds to Minutes Time Scale.
- Author
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Taboada, R. E. Rodríguez and Berhondo, A. L. Méndez
- Subjects
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SOLAR radio emission , *POLARIZATION (Nuclear physics) , *PARTICLES (Nuclear physics) , *POLARISCOPE , *OPTICAL instruments , *ELECTROMAGNETIC waves , *SOLAR radiation - Abstract
In this work we pay attention to the characteristics of millisecond spikes in relation to the general activity in which they are included, processes with very different time scales. Observations were provided by the Trieste Astronomical Observatory (OAT) radio polarimeters in 237, 327, 408, 610, 1420 and 2695 MHz, with 100 Hz temporal resolution. Some complementary data were obtained from open sources in Internet (Goes X-R, SOHO images, etc.) The waiting time distribution between individual maxima (flux >10 sfu) was calculated searching for self-organized criticality. Left and right polarization components were analyzed separately. The analyzed temporal interval presents two activity periods. The first related to HXR and gamma emission with both polarization millisecond events, and the following activity period is dominated by the right polarized component events. This behavior is considered evidence of two different dominant generation mechanisms for millisecond events. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]
- Published
- 2006
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