Narrowband dm-spikes in the 2 GHz frequency range and MHD cascading waves in reconnection outflows |
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| Authors: | Marian Karlický Michal Sobotka Karel Ji?i?ka |
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| Institution: | (1) Astronomical Institute, Academy of Sciences of the Czech Republic, 251 65 Ond ejov, Czech Republic |
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| Abstract: | Two examples of clouds of narrowband dm-spikes, observed by the Ond ejov radiospectrograph in the 1–2 GHz frequency range, are analyzed. After transformation of the frequency scales to distances in the solar atmosphere, the power spectra analysis of size scales reveals a spectral index of –5/3, resembling that of Kolmogorov spectra of turbulent cascades. The narrowband dm-spikes are interpreted as radio emission from electrons accelerated in MHD cascading waves, probably generated in plasma outflows from magnetic field reconnection. |
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