---
abstract: 'We have developed a simulation model of particle acceleration in coronal
  shock waves. The model is based on a Monte Carlo method, where particles are traced
  in prescribed large-scale electromagnetic fields utilizing the guiding center approximation.
  The particles are scattered in the turbulence according to quasilinear theory, with
  the scattering amplitude directly proportional to the intensity of Alfv\''en waves
  at gyro-resonant wavenumbers. The Alfv\''en waves are traced simultaneously with
  the particles, so that the wave field is propagated outwards from the Sun using
  WKB propagation supplemented with a phenomenological wavenumber diffusion term and
  a growth rate computed from the net flux of the accelerated particles. We consider
  initial wave amplitudes small enough to allow rapid escape of particles from the
  shock to the ambient medium. Thus, in our model the Alfv\''en waves responsible
  for the diffusive acceleration of particles are generated by the accelerated particles
  themselves. In this work, we study the effects of non-constant shock velocity and
  non- monotonic Alfv\''en velocity on particle acceleration scenarios. We report
  in particular how the deceleration of a shock affects particle intensity and turbulence
  power evolution in the vicinity of the shock.'
adsnote: Provided by the SAO/NASA Astrophysics Data System
adsurl: https://ui.adsabs.harvard.edu/abs/2010AIPC.1216...84B
archivePrefix: arXiv
authors:
- M. Battarbee
- T. Laitinen
- R. Vainio
- N. Agueda
booktitle: Twelfth International Solar Wind Conference
category: publications
date: '2010-03-01'
doi: 10.1063/1.3395969
draft: false
editor:
- first: M.
  last: 'Maksimovic'
- first: K.
  last: 'Issautier'
- first: N.
  last: 'Meyer-Vernet'
- first: M.
  last: 'Moncuquet'
- first: F.
  last: 'Pantellini'
eprint: '1303.4334'
featured: false
month: March
pages: 84-87
primaryClass: astro-ph.SR
projects: []
publication: Twelfth International Solar Wind Conference
publication_types:
- '2'
series: American Institute of Physics Conference Series
tags:
- Solar corona
- Magnetohydrodynamics
- Solar wind
- Shock waves
- Coronal mass ejection
- Magnetohydrodynamics and plasmas
- Particle emission solar wind
- Planetary bow shocks
- Interplanetary shocks
- Astrophysics - solar and stellar astrophysics
- Physics - space physics
title: 'Acceleration of Energetic Particles Through Self-Generated Waves in a Decelerating
  Coronal Shock'
type: INPROCEEDINGS
volume: '1216'
year: '2010'
---