Solar flares in active region NOAA 9042 on 21 June 2000

Details Solar flares in active region NOAA 9042 on 21 June 2000 Solar flares in active region NOAA 9042 on 21 June 2000

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..741r&link_type=abstract

In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze

Physics

1

Solar Active Regions: Solar Flares

Scientific paper

During an analysis of the observations collected in the frame of the year 2000 observing season we have found an interesting event of two sympathetic flares in active regions NOAA 9042. Up to now we have analysed visible, UV, X-ray and radio data taken on 21 June 2000 (observations taken between 05 UT and 14 UT). We have found that an increase of the optical emission in the secondary flare occurred, at least partially, as a consequence of the exchange of the kinematic energy of the macroscopic motion of material, falling down onto the chromosphere, into the thermal energy in the loop anchorage regions, it means by the infall mechanism. The energy release of the primary flare was associated by emission of numerous millisecond radio spikes recoreded with the 80 μs time resolution.

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