Results 11 to 20 of about 13,753 (202)

Efficiency of particle acceleration at interplanetary shocks: Statistical study of STEREO observations [PDF]

Astronomy & Astrophysics, 2016
Context. Among others, shocks are known to be accelerators of energetic charged particles. However, many questions regarding the acceleration efficiency and the required conditions are not fully understood. In particular, the acceleration of electrons by
Dresing, Nina, Heber, Bernd, Klassen, Andreas, Theesen, Solveig   +3 more
core   +2 more sources

Particle Acceleration at Interplanetary Shocks [PDF]

Space Science Reviews, 2007
This paper briefly reviews proton acceleration at interplanetary shocks. This is key to describing the acceleration of heavy ions at interplanetary shocks because wave excitation—and hence particle scattering—at oblique shocks is controlled by the protons and not the heavy ions.
Zank, G. P., Li, Gang, Verkhoglyadova, Olga   +2 more
openaire   +2 more sources

Particle Acceleration at Interplanetary Shocks [PDF]

AIP Conference Proceedings, 2008
The acceleration of interstellar pick-up ions as well as solar wind species has been observed at a multitude of interplanetary (IP) shocks by different spacecraft. This paper expands upon previous work modeling the phase space distributions of accelerated ions associated with the shock event encountered on day 292 of 1991 by the Ulysses mission at 4.5 ...
Matthew G. Baring, Errol J. Summerlin, Gang Li, Qiang Hu, Olga Verkhoglyadova, Gary P. Zank, R. P. Lin, J. Luhmann   +7 more
openaire   +2 more sources

Quiet time particle acceleration in interplanetary space [PDF]

Astronomy & Astrophysics, 2005
9 pages, 9 figures; accepted for publication in Astronomy and ...
LEPRETI, Fabio, ISLIKER H, PETRAKI K, VLAHOS L.   +3 more
openaire   +3 more sources

Acceleration of Solar Wind Particles by Traveling Interplanetary Shocks [PDF]

The Astrophysical Journal, 2019
Abstract The acceleration of thermal solar wind (SW) protons at spherical interplanetary shocks driven by coronal mass ejections is investigated. The SW velocity distribution is represented using κ-functions, which are transformed in response to simulated shock transitions in the fixed-frame flow speed, plasma number density, and ...
P. L. Prinsloo, R. D. Strauss, J. A. le Roux   +2 more
openaire   +3 more sources

Acceleration of Solar Energetic Particles by the Shock of Interplanetary Coronal Mass Ejection [PDF]

The Astrophysical Journal, 2021
Abstract Interplanetary coronal mass ejection (ICME) shocks are known to accelerate particles and contribute significantly to solar energetic particle events. We have performed magnetohydrodynamic-particle in cell simulations of ICME shocks to understand the acceleration mechanism. These shocks vary in Alfvénic Mach numbers as well as in
Shanwlee Sow Mondal, Aveek Sarkar, Bhargav Vaidya, Andrea Mignone   +3 more
openaire   +2 more sources

Numerical Simulations of Particle Acceleration at Interplanetary Quasi-perpendicular Shocks [PDF]

The Astrophysical Journal, 2017
Abstract Using test particle simulations we study particle acceleration at highly perpendicular ( ) shocks under conditions of modeling magnetic turbulence. We adopt a backward-in-time method to solve the Newton–Lorentz equation using the observed shock parameters for quasi ...
F.-J. Kong, G. Qin, L.-H. Zhang
openaire   +2 more sources

Acceleration of Solar Wind Ions by Nearby Interplanetary Shocks: Comparison of Monte Carlo Simulations with Ulysses Observations [PDF]

, 1996
The most stringent test of theoretical models of the first-order Fermi mechanism at collisionless astrophysical shocks is a comparison of the theoretical predictions with observational data on particle populations.
Balogh A., Baring M. G., Baring M. G., Bell A. R., Burton M. E., Decker R. B., Decker R. B., Donald C. Ellison, Ellison D. C., Ellison D. C., Ellison D. C., Fuselier S. A., Fuselier S. A., Giacalone J., Gloeckler G., Gloeckler G., Gosling J. T., Gosling J. T., Gosling J. T., Gosling J. T., Gosling J. T., Hoppe M. M., Hundhausen A. J., Ipavich F. M., Ipavich F. M., Jokipii J. R., Jones F. C., Jones T. W., Keith W. Ogilvie, Kennel C. F., Lanzerotti L. J., Lee M. A., Liewer P. C., Matthew G. Baring, Mobius E., Ogilvie K. W., Phillips J. L., Robert J. Forsyth, Sarris E. T., Scholer M., Tan L. C., Tan L. C., Trattner K. J., Trattner K. J., Tsurutani B. T., Valdes-Galicia J. F., Vasyliunas V. M., Vinas A. F.   +47 more
core   +2 more sources

The mixing of interplanetary magnetic field lines: A significant transport effect in studies of the energy spectra of impulsive flares [PDF]

, 2000
Using instrumentation on board the ACE spacecraft we describe short-time scale (~3 hour) variations observed in the arrival profiles of ~20 keV nucleon^(–1) to ~2 MeV nucleon^(–1) ions from impulsive solar flares. These variations occurred simultaneously
Dwyer, J. R., Giacalone, J., Jokipii, J. R., Mason, G. M., Mazur, J. E., Stone, E. C.   +5 more
core   +1 more source

The physics of space weather/solar-terrestrial physics (STP): what we know now and what the current and future challenges are [PDF]

Nonlinear Processes in Geophysics, 2020
Major geomagnetic storms are caused by unusually intense solar wind southward magnetic fields that impinge upon the Earth's magnetosphere (Dungey, 1961). How can we predict the occurrence of future interplanetary events?
B. T. Tsurutani, B. T. Tsurutani, G. S. Lakhina, R. Hajra   +3 more
doaj   +1 more source