Prominence Eruption Associated Solar Energetic Particle Event of 2015 June 18
Abstract
We investigated the characteristics of the 2015 June 18 large solar energetic particle (SEP) event (GOES >10 MeV particle flux was >10 particles/(cm2 s sr)) associated with a prominence eruption from the Sun. Recent work (Gopalswamy et al. 2015 ApJ 806, 8) reported on a set of large SEP events associated with filament eruption (FE) events occurring outside of active regions. The FE-associated SEPs are produced by coronal mass ejections (CMEs) that are accelerating and forming a shock at large distances from the Sun. Such SEPs exhibit a soft energy spectrum with the spectral index >4 in the 10-100 MeV range. The 2015 June 18 eruption was associated with an M1.2 flare and a prominence eruption from the west limb was observed by SDO. The associated CME was fast (speed 1714 km/s), and it was accelerating in the LASCO field of view (acceleration 27.7 m/s2). The CME did not produce a metric type II radio burst but it was associated with an interplanetary (IP) type II radio burst, implying that a strong shock formed in the interplanetary medium. We present our initial findings of this case study of prominence-associated SEPs.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFMSH33F3711T
- Keywords:
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- 2114 Energetic particles;
- INTERPLANETARY PHYSICSDE: 2139 Interplanetary shocks;
- INTERPLANETARY PHYSICSDE: 7513 Coronal mass ejections;
- SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMYDE: 7519 Flares;
- SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY