Shock Acceleration of Solar Energetic Protons: The First 10 Minutes

• Published in: The Astrophysical journal Vol. 686; no. 2; pp. L123 - L126
• Main Authors: Ng, C. K, Reames, D. V
• Format: Journal Article
• Language: English
• Published: Chicago, IL IOP Publishing 20.10.2008; University of Chicago Press
• Subjects: Astronomy; Earth, ocean, space; Exact sciences and technology; Energetics; Shock waves; Coronal mass ejection; Particle emission; acceleration of particles; Sun: coronal mass ejections (CMEs); Sun: particle emission; Particle acceleration; Solar protons; Sun

Proton acceleration at a parallel coronal shock is modeled with self- consistent Alfven wave excitation and shock transmission. 18-50 keV seed protons at 0.1% of plasma proton density are accelerated in 10 minutes to a power-law intensity spectrum rolling over at 300 MeV by a 2500 km s super(-1) sho...