Results 1 to 10 of about 1,276 (215)
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 +3 more
doaj +1 more source
Nonlinear Interaction of Low-frequency Alfvén Waves and Ions
The Astrophysical Journal, 2023 The interaction between Alfvén waves and particles is a critical phenomenon in space and laboratory plasmas, and it has been observed that low-frequency Alfvén waves can accelerate and heat ions through subharmonic resonant interactions.
Xianshu Wu +4 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2021 The topic of this review paper is on the influence of solar wind turbulence on shock propagation and its consequence on the acceleration and transport of energetic particles at shocks.
Fan Guo +3 more
doaj +1 more source
Magnetic-reconnection-driven Turbulence and Turbulent Reconnection Acceleration
The Astrophysical Journal, 2023 This paper employs an MHD-PIC method to perform numerical simulations of magnetic-reconnection-driven turbulence and turbulent reconnection acceleration of particles.
Shi-Min Liang +3 more
doaj +1 more source
Flat Spectra of Energetic Particles in Interplanetary Shock Precursors
The Astrophysical JournalThe observed energy spectra of accelerated particles at interplanetary shocks often do not match the diffusive shock acceleration (DSA) theory predictions. In some cases, the particle flux forms a plateau over a wide range of energies, extending upstream
Mikhail Malkov, Joe Giacalone, Fan Guo
doaj +1 more source
Three-stage Acceleration of Solar Energetic Particles Detected by Parker Solar Probe
The Astrophysical Journal LettersCoronal mass ejections (CMEs) drive powerful shocks and thereby accelerate solar energetic particles (SEPs) as they propagate from the corona into interplanetary space.
Xiaomin Chen, Chuan Li
doaj +1 more source
Formation of the Injection Function of Solar Energetic Particles in Gradual Events
The Astrophysical Journal, 2023 We present a model for solar energetic particle injection into interplanetary space in gradual events, in which particle acceleration occurs in a limited region of the solar atmosphere.
Ivan Petukhov +2 more
doaj +1 more source
The Astrophysical JournalEnergetic positrons have been observed in the interstellar medium, and high-energy positrons with relativistic energies up to approximately 1 TeV have been detected in Galactic cosmic rays.
Huan Yu, Qi Xia, Jun Fang
doaj +1 more source
ERNE observations of energetic particles associated with Earth-directed coronal mass ejections in April and May, 1997 [PDF]
Annales Geophysicae, 2000 Two Earth-directed coronal mass ejections (CMEs), which were most effective in energetic (~1–50 MeV) particle acceleration during the first 18 months since the Solar and Heliospheric Observatory (SOHO) launch, occurred on April 7 and May 12, 1997.
A. Anttila, T. Sahla
doaj +1 more source
Evolution of Electron Acceleration by Corotating Interaction Region Shocks at 1 au
The Astrophysical Journal LettersWe present the first observations of in situ electron acceleration at corotating interaction region (CIR) shocks near 1 au, utilizing measurements from Wind and Magnetospheric Multiscale (MMS) mission in the interplanetary medium. As the forward (reverse)
Xinnian Guo +6 more
doaj +1 more source