Morphology of Solar Type II Bursts Caused by Shock Propagation through Turbulent and Inhomogeneous Coronal Plasma

Abstract Type II solar bursts are radio signatures of shock waves in the corona driven by flares or coronal mass ejections (CMEs). Therefore, these present complex spectral morphologies dynamic spectra. Here, we report meter–decameter observations a type burst on 2014 July 25 made with Ukrainian telescopes UTR-2 (8.25–33 MHz) and GURT (8.25–78 MHz). The demonstrates fundamental harmonic components, band splitting, herringbone structure, break. These specific features, observed jointly single burst, rarely detected. To contribute to our understanding such puzzling events, carried out detailed analysis recorded spectrum. In particular, pattern has been exploited study electron density turbulence corona. We calculated power densities flux variations selected herringbones. index is range α = −1.69 −2.00 an average value −1.897, which slightly higher than Kolmogorov −5/3 for fully developed turbulence. also recognized that second consists three drifting lanes. lane onset times coincide break first burst. regard CME/shock passage through streamer caused triggered multilane emission. Thus, support one proposed scenarios occurrence as being result CME/shock–streamer interaction.