Evaluation of coronal shock wave velocities from the ii type radio bursts parameters
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Дата
2015
Науковий керівник
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Видавець
Одеський національний університет імені І. І. Мечникова
Анотація
The work presents the results of research
of connection between the coronal shock waves and the
parameters of type II (mII) meter-decameter bursts in 25-
180 MHz band for 66 solar proton events. The velocities
of coronal shock waves for this two cases where
determined. In the first case the velocities of the shock
waves was evaluated according to the Newkirck model
and in the second case – directly from the type II radio
burst parameters. The calculated values of shock waves
velocity was compared with the same velocity values that
is published on NGDC site. The comparative analysis
showed that precision of coronal shock waves velocity
estimation which gets directly from type II radio bursts
parameters was higher than the same one which used the
Newkirck model. Research showed that there is exist the
sufficiently strong connection between the shock wave
velocity and the delay of type II burst intensity maximum
on the second harmonica. Correlation coefficient between
the studied parameters was equal to ≈ 0.65.
Опис
Ключові слова
shock speed, drift velocity
Бібліографічний опис
Odessa Astronomical publications = Одесские астрономические публикации = Одеські астрономічні публікації