Results 51 to 60 of about 2,458,506 (201)
THE ACCELERATION OF IONS IN SOLAR FLARES DURING MAGNETIC RECONNECTION [PDF]
The Astrophysical Journal, 2011 The acceleration of solar flare ions during magnetic reconnection is explored via particle-in-cell simulations that self-consistently follow the motions of both protons and $α$ particles. We demonstrate that the dominant ion heating during reconnection with a guide field (a magnetic component perpendicular to the reconnection plane) results from pickup
Knizhnik, Kalman +2 more
openaire +2 more sources
Additional acceleration of solar-wind particles in current sheets of the heliosphere [PDF]
, 2015 Particles of fast solar wind in the vicinity of the heliospheric current sheet (HCS) or in a front of interplanetary coronal mass ejections (ICMEs) often reveal very peculiar energy or velocity profiles, density distributions with double or triple peaks,
V. Zharkova +4 more
core +2 more sources
Kinetic Scale Magnetic Reconnection with a Turbulent Forcing: Particle-in-cell Simulations
The Astrophysical Journal, 2023 Turbulent magnetic reconnection has been observed by spacecraft to occur commonly in terrestrial magnetosphere and the solar wind, providing a new scenario of kinetic scale magnetic reconnection.
San Lu +10 more
doaj +1 more source
Modeling Kinetic Reconnection Onset in Global Magnetospheric Simulations
Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.Abstract We investigate the onset of magnetic reconnection in Earth's magnetotail using a coupled magnetohydrodynamic with embedded particle‐in‐cell (MHD‐EPIC) model, which self‐consistently links global magnetospheric dynamics to electron‐scale kinetic processes. Unlike standalone kinetic simulations with idealized boundary conditions, reconnection in
Talha Arshad, Yuxi Chen, Gabor Toth
wiley +1 more source
PLASMA COMPRESSION IN MAGNETIC RECONNECTION REGIONS IN THE SOLAR CORONA [PDF]
The Astrophysical Journal, 2016 ABSTRACT It has been proposed that particles bouncing between magnetized flows converging in a reconnection region can be accelerated by the first-order Fermi mechanism. Analytical considerations of this mechanism have shown that the spectral index of accelerated particles is related to the total plasma compression within the ...
E. Provornikova +2 more
openaire +2 more sources
On the properties of single-separator MHS equilibria and the nature of separator reconnection [PDF]
, 2015 This thesis considers the properties of MHS equilibria formed through non-resistive MHD relaxation of analytical non-potential magnetic field models, which contain two null points connected by a generic separator. Four types of analytical magnetic fields
Stevenson, Julie E. H.
core +2 more sources
Witnessing Magnetic Reconnection in Tangled Superpenumbral Fibrils around a Sunspot
The Astrophysical Journal3D magnetic reconnection is a fundamental plasma process crucial for heating the solar corona and generating the solar wind, but resolving and characterizing it for the Sun remain challenging.
Hechao Chen +10 more
doaj +1 more source
Space Weather, Volume 24, Issue 9, September 2026.Abstract This paper introduces an updated version of the University of Michigan Geospace model. The Geospace model has been used for operational forecasting at the Space Weather Modeling Center of the National Oceanic and Atmospheric Agency since 2016 with regular updates. The current operational version, Geospace V2, was launched in 2021 and is driven
Gábor Tóth +2 more
wiley +1 more source
Magnetic Reconnection at the Earliest Stage of Solar Flux Emergence [PDF]
The Astrophysical Journal, 2018 Abstract On 2016 September 20, the Interface Region Imaging Spectrograph observed an active region during its earliest emerging phase for almost 7 hr. The Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory observed continuous emergence of small-scale magnetic bipoles with a rate of ∼1016 Mx s−1.
Hui Tian +5 more
openaire +3 more sources
First-principles theory of the rate of magnetic reconnection in magnetospheric and solar plasmas
Communications Physics, 2022 Different models exist to characterize magnetic reconnection, a process that converts magnetic energy into plasma thermal and kinetic energy, but a quantitative theoretical predictive model of how rapidly it proceeds has been lacking.
Yi-Hsin Liu +5 more
doaj +1 more source