Characteristics of radio-loud CME
Abstract
In this paper, we study the characteristics of 46 radio-loud (RL) Coronal Mass Ejections (CMEs) which occurred during 1997-2006. All these RL CMEs were associated with M- and X-class flares. We selected 46 RL CMEs, out of which 26 events (57%) were associated with Solar Energetic Particle (SEP) events detected at 1 AU. Furthermore, we study the link between the flare accelerated electrons in the low corona and protons at 1 AU and found a positive correlation (30%). It suggests the link between the injection sites for electrons and protons, which are most likely accelerated at the flare current sheet. We also study the relationship between the CME speed and peak proton flux (>10 MeV) at 1 AU and found a good correlation ( 60%), which suggests the proton acceleration by CME driven shocks. In addition, we found two branches (lower and upper) of SEP events showing different characteristics. The lower branch SEP events are associated with impulsive rise with more proton flux whereas the upper branch SEP events exhibit gradual rise and less proton flux. We suggest that flares (current sheet) and CMEs (shocks) both are involved in the particle acceleration for the lower branch, whereas in the upper branch mostly CME driven shocks play an important role in the particle acceleration.
- Publication:
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URSI Asia-Pacific Radio Science Conference (URSI AP-RASC
- Pub Date:
- March 2017
- DOI:
- 10.1109/URSIAP-RASC.2016.7883559
- Bibcode:
- 2017ursi.confE...1P