Abstract Title: *
Why we are interesting in study in weak solar flares?

Authors: *
L. Kashapova, D. Zhdanov, S. Lesovoi, A. Kudryavtseva (ISTP SB RAS, Irkutsk, Russia) and
Lomonosov BDRG collaboration( The Skobeltsyn Institute, MSU, Moscow, Russia)

Institution: *
Institute of Solar Terrestrial Physics SB RAS, Irkutsk, Russia

Preferred format: *
Oral

Abstract Text: *
Studying the solar flares we are usually facing with that the powerful events are combination of
phenomena and processes of different nature. This results to different explanations based on
different scenarios which sometimes contradict to each other. The faint solar flares ( the B, C
GOES classes and lower) are attractive objects for study of the processes of energy release
and transport . They mostly present «pure cases» and provide more clear data for revealing of
the mechanisms and testing of the theoretical models and hypothesis. However the low level of
their emission both in X-rays and microwaves is obstacle for the progress in this field. New
generation of radio telescopes and combination of X-ray data (time profiles and spectral data)
with observations in radio (microwaves) and results of modeling allow to diagnose the energy
release processes with confidence even for very weak events. Nowadays we have the multiple
scenario set for weak solar flare from the high temperature events to «cold flares’. We present
the possibilities of such diagnostics by the example of the several events and discuss limits of
such approach basing on the modern observational data.