Results 81 to 90 of about 669 (180)

A semi-analytical foreshock model for energetic storm particle events inside 1 AU

Journal of Space Weather and Space Climate, 2014
We have constructed a semi-analytical model of the energetic-ion foreshock of a CME-driven coronal/interplanetary shock wave responsible for the acceleration of large solar energetic particle (SEP) events.
Vainio Rami, Pönni Arttu, Battarbee Markus, Koskinen Hannu E. J., Afanasiev Alexandr, Laitinen Timo   +5 more
doaj   +1 more source

Suprathermal Electron Spectra at the Earth’s Bow Shock

The Astrophysical Journal Letters
We present a statistical study of in situ acceleration of ∼0.4–200 keV suprathermal electrons at the Earth’s bow shock, using Wind 3D Plasma and Energetic Particle measurements from 1994 November to 2004 May.
Xinnian Guo, Liu Yang, Linghua Wang, Qianyi Ma   +3 more
doaj   +1 more source

Model for Particles Accelerated at Interplanetary Shocks starting with a Power Law Energy Spectrum

, 2022
This work is supported by the NSF-REU solar physics program at SAO, grant number AGS-1850750. This work is also partially supported by the NSF under grant 1850774.
openaire   +1 more source

Electron Acceleration Efficiency at Earth’s Bow Shock: Statistical Results

The Astrophysical Journal
In this paper, we present a statistical study of electron acceleration efficiency in 1492 selected bow shock events. We define the acceleration efficiency as $\eta ={n}_{{\rm{dn}}}/{n}_{{\rm{am}}}$ , where ${n}_{{\rm{dn}}}$ and n _am are the downstream ...
G. Qin, S. Wang, F.-J. Kong
doaj   +1 more source

Towards advanced forecasting of solar energetic particle events with the PARASOL model

Journal of Space Weather and Space Climate
Gradual solar energetic particle (SEP) events are generally attributed to the particle acceleration in shock waves driven by coronal mass ejections (CMEs). Space-weather effects of such events are important, so there has been continuous effort to develop
Afanasiev Alexandr, Wijsen Nicolas, Vainio Rami   +2 more
doaj   +1 more source

The Acceleration of low energy charged particles at interplanetary shock waves

, 1989
Bibliography: p. 164-173.
openaire   +2 more sources

Interplanetary Magnetic Field Curvature and Its Role in Particle Acceleration: Magnetospheric Multiscale and Solar Orbiter Observations

The Astrophysical Journal
The curvature of the magnetic field plays a crucial role in magnetic confinement, magnetic reconnection, particle heating, and acceleration. Though the magnetic field curvature has been sufficiently investigated in the terrestrial magnetosheath, there is
D. K. Hu, Y. Y. Liu, J. B. Cao, C. M. Liu, Y. T. Song   +4 more
doaj   +1 more source

Two‐Step Electron Acceleration During a Flux Rope Crossing of Earth's Bow Shock

Geophysical Research Letters
The generation of cosmic ray particles with ultra‐relativistic energies is a crucial issue in astrophysical and space physics. Shocks have been acknowledged as efficient accelerators in the universe which can produce energetic particles through a variety
D. K. Hu, Y. Y. Liu, J. B. Cao, C. M. Liu   +3 more
doaj   +1 more source

The Polarization Signatures of the Inverse Cascade in Magnetic Turbulence

The Astrophysical Journal
The inverse cascade of magnetic energy from smaller to larger scales is a key physical process for the formation of coherent magnetic fields in many astronomical turbulent systems.
X. W. Zhu, Y. Xie, Z. Lei, W. Q. Yuan, X. X. Jin, Z. H. Zhao, B. Qiao   +6 more
doaj   +1 more source

Tempered Superdiffusive Shock Acceleration at a Perpendicular Shock

The Astrophysical Journal
A theory for steady-state tempered superdiffusive shock acceleration of energetic particles at a plane perpendicular shock is presented that involves solving analytically a tempered fractional Parker transport equation for perpendicular transport in ...
J. A. le Roux, R. K. Shikha
doaj   +1 more source