Results 181 to 190 of about 1,276 (215)

Modeling Particle Acceleration at Interplanetary Shocks

AIP Conference Proceedings, 2008
A brief review of particle acceleration at inner heliospheric interplanetary and coronal mass ejection (CME)‐driven shocks is presented. The discussion is presented in terms of a specific event that was modeled using the Particle Acceleration and Transport in the Heliosphere model (hereafter PATH) code.
G P Zank, Olga P Verkhoglyadova, Qiang Hu   +2 more
exaly   +2 more sources

Observations of Particle Acceleration at Interplanetary Shocks

AIP Conference Proceedings, 2009
Collisionless shocks accelerate charged particles throughout heliosphere, from low in the solar corona to the outer edge of the supersonic solar wind. Particles can gain energy while interacting with shocks in different ways, depending on conditions at the shock and on particle species and energy.
G C Ho, D Lario, R B Decker
exaly   +2 more sources

A theoretical perspective on particle acceleration by interplanetary shocks and the Solar Energetic Particle problem

Physics Reports, 2015
Abstract Understanding the physics of Solar Energetic Particle (SEP) events is of importance to the general question of particle energization throughout the cosmos as well as playing a role in the technologically critical impact of space weather on society.
Olga P Verkhoglyadova, G P Zank, Gang Li   +2 more
exaly   +2 more sources

Particle acceleration in interplanetary shocks: Classification of energetic particle events and modeling

AIP Conference Proceedings, 2001
Gradual solar energetic particle events using data observed by EPAM (Electron, Proton, and Alpha Monitor), SWEPAM (Solar Wind Electron, Proton and Alpha Monitor) and Magnetic Field Experiment (MAG) on the ACE are studied. The energetic particle events are classified in four types according to the variance in the flux, the characteristic duration time ...
K Yamashita, Yamashita K
exaly   +2 more sources

The acceleration of energetic particle fluxes in shock fronts in interplanetary space

Canadian Journal of Physics, 1968
On six occasions during 1966, enhanced fluxes of > 7.5-MeV energetic particles have been observed coincident with the onset of a Forbush decrease which was initiated by a solar flare. The anisotropic character of the particle fluxes indicates that the particles were not trapped and that particle acceleration was occurring in the region associated ...
U. R. Rao, K. G. McCracken, R. P. Bukata
openaire   +2 more sources

Interplanetary acceleration of energetic particles at 1 and 5 AU

Astrophysics and Space Science, 1982
Energetic particle (0.1 to 100 MeV protons) acceleration is studied by using high resolution interplanetary magnetic field and plasma measurements at 1 AU (HEOS-2) and at ∼5 AU (Pioneer 10). Energy changes of a particle population are followed by computing test particle trajectories and the energy changes through the particle interaction with the time ...
X Moussas, J J Quenby, J F Valdes Galicia   +2 more
exaly   +2 more sources

Particle acceleration at shocks and magnetic turbulence in the interplanetary space

, 2019
Dottorato Ricerca in Scienze e Tecnologie Fisiche, Chimiche e dei Materiali.
Chiappetta, Federica, Carbone, Vincenzo, Lepreti, Fabio   +2 more
openaire   +2 more sources

The structure and evolution of interplanetary shocks and the relevance for particle acceleration

Nuclear Physics, Section B, Proceedings Supplements, 1995
It is now widely accepted that interplanetary shocks initiated by coronal mass ejections play a dominant role in the generation of the vast majority of large solar energetic particle events. However, our understanding of the details of the acceleration process is far from complete.
exaly   +2 more sources

The acceleration of charged particles in interplanetary shock waves

Space Science Reviews, 1982
Consideration of the theoretical and observational literature on energetic ion acceleration in interplanetary shock waves is the basis for the present discussion of the shock acceleration of the solar wind plasma and particle transport effects. It is suggested that ISEE data be used to construct data sets for shock events that extend continuously from ...
M.E. Pesses, R.B. Decker, T.P. Armstrong
openaire   +1 more source

Acceleration in solar flares: Interacting particles versus interplanetary particles

Advances in Space Research, 1993
Abstract We study the properties of flare accelerated particles using gamma ray observations. We derive ion and electron energy spectra, electron to proton ratios, and numbers of interacting particles. We investigate the effects of the abundance variations implied by the gamma ray data on these parameters.
R. Ramaty, N. Mandzhavidze, B. Kozlovsky, J.G. Skibo   +3 more
openaire   +1 more source