Imaging and Spectral Observations of a Type-II Radio Burst Revealing the Section of the CME-Driven Shock That Accelerates Electrons

We report on a multi-wavelength analysis of the 26 January 2014 solar eruption involving coronal mass ejection (CME) and Type-II radio burst, performed by combining data from various space-and ground-based instruments. An increasing standoff distance with height shows presence strong shock, which further manifests itself in continuation metric burst into decameter-hectometric (DH) domain. A plot speed versus position angle (PA) different points CME leading edge travelled speeds. From starting frequency white-light data, we find that shock signature producing might be coming flanks CME. Measuring speeds flanks, southern flank to at higher than northern flank; contours imaging showed source was nose, local Alfven is close speed, thus causing Mach number small there. Also, streamer near appears have provided additional favorable conditions for generation shock-associated emission. These results provide conclusive evidence emission could originate CME, our study