Results 61 to 70 of about 662,743 (199)

Electron pitch-angle diffusion: resonant scattering by waves vs. nonadiabatic effects [PDF]

Annales Geophysicae, 2013
In this paper we investigate the electron pitch-angle diffusion coefficients in the night-side inner magnetosphere around the geostationary orbit (L ~ 7) due to magnetic field deformation.
A. V. Artemyev, A. V. Artemyev, K. G. Orlova, K. G. Orlova, D. Mourenas, O. V. Agapitov, O. V. Agapitov, V. V. Krasnoselskikh   +7 more
doaj   +1 more source

First Observation of Four‐Band Ion Cyclotron Whistlers

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Ion cyclotron whistlers are frequently observed in low Earth orbit, typically formed when right‐hand polarized lightning whistlers undergo polarization reversal at crossover frequencies. In this study, we for the first time report a four‐band ion cyclotron whistler event detected by Van Allen Probe A.
Huicong Chen, Hui Zhu, Tao Xian, Gaopeng Lu, Yingying Zhao, Zhijie Qin, Zhenghao She   +6 more
wiley   +1 more source

Multi-spacecraft observation of plasma dipolarization/injection in the inner magnetosphere [PDF]

Annales Geophysicae, 2007
Addressing the origin of the energetic particle injections into the inner magnetosphere, we investigate the 23 February 2004 substorm using a favorable constellation of four Cluster (near perigee), LANL and Geotail spacecraft. Both an energy-dispersed
S. V. Apatenkov, V. A. Sergeev, M. V. Kubyshkina, R. Nakamura, W. Baumjohann, A. Runov, I. Alexeev, A. Fazakerley, H. Frey, S. Muhlbachler, P. W. Daly, J.-A. Sauvaud, N. Ganushkina, T. Pulkkinen, G. D. Reeves, Y. Khotyaintsev   +15 more
doaj   +1 more source

Recirculation of plasmasphere material during idealized magnetic storms

Frontiers in Physics, 2023
The fate of flux tube material once it is eroded from of the plasmasphere through a dayside plume remains unknown. The eroded plasmasphere material can be either swept away by the solar wind and lost from Earth’s system, or recirculated into the inner ...
Christian-Andrew Bagby-Wright, Daniel T. Welling, Ramon E. Lopez, Roxanne Katus, Brian M. Walsh   +4 more
doaj   +1 more source

Quantifying Non‐Maxwellian Properties of Ion Populations During Reconnection at Earth's Magnetopause

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract We investigate ion velocity‐space features within the exhaust of magnetopause reconnection using a global hybrid‐Vlasov simulation. The Hermite transform and Gaussian Mixture Model (GMM) are applied to quantify the complexity of velocity‐space structures that arise during the mixing of magnetospheric and magnetosheath ion populations.
I. Zaitsev, K. Papadakis, L. Pänkäläinen, M. Alho, S. Hoilijoki, U. Ganse, T. Roos, M. Palmroth   +7 more
wiley   +1 more source

Synthesizing auroral substorm processes based on magnetosphere-ionosphere electric currents

Frontiers in Astronomy and Space Sciences
A synthesis of various processes associated with auroral substorms is attempted by considering medium intensity substorms. In this paper, we consider that the magnetosphere-ionosphere system is an electric current system.
Syun-Ichi Akasofu, A. T. Y. Lui, Lou-Chuang Lee   +2 more
doaj   +1 more source

Multipoint observation of the response of the magnetosphere and ionosphere related to the sudden impulse event on 19 November 2007

Journal of Space Weather and Space Climate, 2015
The aim of this study is to provide a complete scope of a magnetic sudden impulse (SI) event along its way through interplanetary space and the magnetosphere until its arrival to the ground.
Segarra Antoni, Nosé Masahito, Curto Juan José, Araki Tohru   +3 more
doaj   +1 more source

Proton Equatorial Pitch Angle Distributions in Jupiter's Inner Magnetosphere

Geophysical Research Letters, 2023
We use data from the plasma and energetic particle instruments on the Juno spacecraft, JADE and JEDI, to study the equatorial pitch angle distributions of energetic protons within Jupiter's inner magnetosphere during Juno's prime mission from 2016 to ...
Y. Sarkango, J. R. Szalay, A. R. Poppe, Q. Nénon, P. Kollmann, G. Clark, D. J. McComas   +6 more
doaj   +1 more source

Enhancement of Magnetic Flux Transferred to the Magnetotail Due to a Storm‐Time Kelvin‐Helmholtz Instability

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Along the flank magnetopause, magnetosheath flow interfaced with the relatively stationary magnetosphere produces strong flow shears, and the Kelvin‐Helmholtz instability (KHI) occurs. When the interplanetary magnetic field (IMF) is southward, anti‐parallel day‐side reconnection and KHI can interact, which may enhance the reconnection rate as ...
Brandon L. Burkholder, Katariina Nykyri, Xuanye Ma, Lauri Holappa, Harsha Gurram, Rachel C. Rice, David Sibeck, Dinesh K. V. Radhakrishnan   +7 more
wiley   +1 more source

Impact of Realistic Detector Response and Azimuthal Drift on the Quantification of Energetic Electron Precipitation Using POES/MetOp

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Quantifying energetic electron precipitation is essential for understanding ring current and radiation belt loss, as well as magnetosphere‐ionosphere‐atmosphere coupling. The count rate ratio between the 90° and 0° telescopes (CR90/CR0) on POES/MetOp satellites is a commonly used proxy for precipitation and pitch‐angle diffusion rates (DW ${D ...
Weichao Tu, Zhi‐Gu Li
wiley   +1 more source