The study of relations between kilometric radiobursts and energetic electrons during powerful solar flares: INTERBALL-1

Details The study of relations between kilometric radiobursts and energetic electrons during powerful solar flares: INTERBALL-1 The study of relations between kilometric radiobursts and energetic electrons during powerful solar flares: INTERBALL-1

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.535..679k&link_type=abstract

In: Solar variability as an input to the Earth's environment. International Solar Cycle Studies (ISCS) Symposium, 23 - 28 June 2

Physics

Solar Flares: Radio Bursts

Scientific paper

The observational data of the long wave radiobursts and energetic electrons, registered on satellite INTERBALL-1 during large chromospheric flares have been analyzed. Radioemission was observed at the frequency range 100-1500 kHz with multi-channel spectroanalyser with passband 10 kHz. Electrons have been registered with DOK-2 at energy range E = 20-450 keV. The temporal profiles of solar radiobursts and electron fluxes and spectra were investigated. The onset and increase of radiobursts coincided with explosive phase of the flare and characterized by high drift velocity, typical to the radiobursts of III type and the duration within several minutes. It is known that the generation of radiobursts was caused by the energetic electrons, accelerated at solar flare and spreading to the outer corona up to the Earth orbit. The energetic electrons after solar flares, which we analyzed, have been observed near the Earth with energy E~100 keV, that sufficed to generate the kilometric radiobursts at near-solar space. For some events we valued the time of spreading of electrons to the Earth. Also the question about possible origin of long wave radioemission from accelerated electrons in connection with CME was considered. Besides the solar events we analyzed the AKR, the radioemission of magnetospheric origin, observed during the geomagnetic disturbances after analyzed solar flares.

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