Tadpoles in Wavelet Spectra of a Solar Decimetric Radio Burst
Authors:
H. Meszarosova, M. Karlicky, J. Rybak, K. Jiricka
Image & caption:
Please click on image thumbnail to get more info:
Image caption::
Characteristic examples of the tadpoles detected on selected radio
frequencies in the subinterval T (see Figure 1). Panels A show
original time series. Panels B show corresponding wavelet power
spectra with tadpole patterns outlined by contours at the 99%.
Panels C show the radio fluxes computed by the inverse transform
from the tadpole wavelet spectra for the period range 40-100 s
around the characteristic period.
Description:
In the solar decimetric type IV radio event observed on 2001
June 13, we have found wavelet tadpole patterns for the first
time. They were detected simultaneously at all radio frequencies
in the 1.1-4.5 GHz frequency range. The characteristic period of
the wavelet tadpole patterns was found to be 70.9 s. The parameters
of the tadpoles on different frequencies are very similar and the
correlations between individual radio fluxes are high. These
tadpoles are interpreted as a signature of the magnetoacoustic
wave train moving along the flare loop through the radio source
and modulating its gyrosynchrotron emission.
SK
SAS
