Results 21 to 30 of about 1,708,012 (159)

The effects of particle injections on the ring current development during the 7-8 September 2017 geomagnetic storm

open access: yesFrontiers in Astronomy and Space Sciences, 2023
In this study we investigate the role of particle injections on the ring current development during the 7-8 September 2017 geomagnetic storm by applying a temporally and spatially varying data-driven outer boundary condition in numerical simulations of ...
C. P. Ferradas   +7 more
doaj   +1 more source

Magnetosonic Harmonic Falling and Rising Frequency Emissions Potentially Generated by Nonlinear Wave‐Wave Interactions in the Van Allen Radiation Belts

open access: yesGeophysical Research Letters, 2018
Magnetosonic waves play a potentially important role in the complex evolution of the radiation belt electrons. These waves typically appear as discrete emission lines along the proton gyrofrequency harmonics, consistent with the prediction of the local ...
Nigang Liu   +4 more
doaj   +1 more source

Severe magnetic storm effects in the ionosphere over Istanbul:a case study

open access: yesAnnals of Geophysics, 2002
The present study concentrates on the effects on the ionosphere of an individual severe magnetic Storm of the Sudden Commencement (SSC)type,with SSC taking place in the daytime hours.The storm started on 29 October 1968 and went on to 2 November 1968 ...
H. Agopyan
doaj   +1 more source

Pitch Angle Structures of Ring Current Ions Induced by Evolving Poloidal Ultra‐Low Frequency Waves

open access: yesGeophysical Research Letters, 2020
Ultra‐low frequency (ULF) waves can effectively accelerate ring current ions through drift‐bounce resonance. Conventional theories have been developed to understand this resonance since the dawn of the space age, which usually assume ULF waves are quasi ...
Z.‐Y. Liu   +4 more
doaj   +1 more source

Next generation magnetic field measurements from low-earth orbit satellites enable enhanced space weather operations

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Large-scale current systems in the ionosphere and the magnetosphere are intimately controlled by the solar wind-magnetosphere interaction and the magnetosphere-ionosphere coupling.
Guan Le   +14 more
doaj   +1 more source

Quantifying adiabatic motion in the outer radiation belt and ring current with invariant matching

open access: yesFrontiers in Astronomy and Space Sciences
Adiabatic motion is a fundamental reversible process for geomagnetically trapped particle populations, including particles comprising the ring current and radiation belts.
D. E. da Silva   +3 more
doaj   +1 more source

Kondo resonance effect on persistent currents through a quantum dot in a mesoscopic ring

open access: yes, 1999
The persistent current through a quantum dot inserted in a mesoscopic ring of length L is studied. A cluster representing the dot and its vicinity is exactly diagonalized and embedded into the rest of the ring.
A. C. Hewson   +21 more
core   +1 more source

The Role of Mesoscale Plasma Sheet Dynamics in Ring Current Formation

open access: yesFrontiers in Astronomy and Space Sciences, 2021
During geomagnetically active periods ions are transported from the magnetotail into the inner magnetosphere and accelerated to energies of tens to hundreds of keV. These energetic ions, of mixed composition with the most important species being H+ and O+
K. A. Sorathia   +8 more
doaj   +1 more source

Possible persistent current in a ring made of the perfect crystalline insulator

open access: yes, 2007
A mesoscopic conducting ring pierced by magnetic flux is known to support the persistent electron current. Here we propose possibility of the persistent current in the ring made of the perfect crystalline insulator.
A. Gendiar   +4 more
core   +1 more source

Persistent spin current and entanglement in the anisotropic spin ring i

open access: yes, 2006
We investigate the ground state persistent spin current and the pair entanglement in one-dimensional antiferromagnetic anisotropic Heisenberg ring with twisted boundary conditions.
Hu, Zi-Xiang, Li, You-Quan
core   +1 more source

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