Coronal Mass Ejections and Solar Energetic Particle Events,

Abstract

We review the observations relating solar energetic particle (SEP) events to coronal mass ejections (CMEs). Nearly every gradual SEP event is associated with a fast (v > 400 km/s) CME, which is presumed to drive a coronal shock that accelerates the SEPs. Evidence supporting the contention that all SEP ions observed in large, gradual events are shock accelerated is reviewed. Evidence for shock acceleration of electrons is found to be more ambiguous. The following current questions in SEP/CME relationships are discussed: (1) SEP production by electric fields in post-flare loops; (2) the relationship of type II burst shocks and CME-driven shocks; (3) flare impulsive phase contributions to SEP events; and (4) the evidence for shock-accelerated (SA) events; and (5) progressively hardening X-ray spectra and SEP events.

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Document Details

Document Type
Technical Report
Publication Date
Dec 13, 1996
Accession Number
ADA319321

Entities

People

  • S. W. Kahler

Organizations

  • Phillips Laboratory

Tags

Communities of Interest

  • C4I

DTIC Thesaurus Topics

  • Abstracts
  • Coronal Mass Ejections
  • Diffraction
  • Ejection
  • Electric Fields
  • Electrons
  • Hardening
  • High Energy
  • Information Operations
  • Observation
  • Particles
  • Physical Properties
  • Production
  • Solar Physics
  • Spectra
  • X Ray Spectra
  • X Rays

Fields of Study

  • Physics

Readers

  • Solar Physics
  • Theoretical Analysis.

Technology Areas

  • Microelectronics