Broken power-law distributions from low coronal compression regions or shocks

N. A. Schwadron, M. A. Lee, M. Gorby, N. Lugaz, H. E. Spence, M. Desai, T. Török, C. Downs, J. Linker, R. Lionello, Z. Mikić, P. Riley, J. Giacalone, J. R. Jokipii, J. Kota, K. Kozarev

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations


Coronal Mass Ejection (CME) expansion regions low in the corona (< 2 - 3 Rs) are highly efficient for the acceleration of energetic particles. Because the acceleration occurs over a finite spatial region, there is a regime where particles diffuse away and escape from the acceleration sites, leading to the formation of broken power-law distributions. This paper highlights recent results indicating that CME expansion and acceleration in the low corona may cause rapid particle acceleration and create large solar energetic particle events with broken power-law distributions.

Original languageEnglish (US)
Article number012025
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - Sep 30 2015
Event14th Annual International Astrophysics Conference: Linear and Nonlinear Particle Energization throughout the Heliosphere and Beyond, AIAC 2015 - Tampa, United States
Duration: Apr 20 2015Apr 24 2015

ASJC Scopus subject areas

  • General Physics and Astronomy


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