Results 101 to 110 of about 1,145 (204)

On the Spatial and Temporal Evolution of EMIC Wave‐Driven Relativistic Electron Precipitation: Magnetically Conjugate Observations From the Van Allen Probes and CALET

Geophysical Research Letters
Electromagnetic ion cyclotron (EMIC) waves have been shown to be able to drive strong electron precipitation, particularly at MeV energies. However, the spatio‐temporal evolution of both the waves and the resulting precipitation is still not well ...
L. W. Blum, A. Bruno, L. Capannolo, Q. Ma, R. Kataoka, S. Torii, D. Baishev   +6 more
doaj   +1 more source

The nonlinear coupling of electromagnetic ion cyclotron and lower hybrid waves in the ring current region: the magnetic storm 1-7May 1998 [PDF]

Nonlinear Processes in Geophysics, 2004
The excitation of lower hybrid waves (LHWs) is a widely discussed mechanism of interaction between plasma species in space, and is one of the unresolved questions of magnetospheric multi-ion plasmas. In this paper we present the morphology, dynamics, and
G. V. Khazanov, E. N. Krivorutsky, K. V. Gamayunov, L. A. Avanov, L. A. Avanov   +4 more
doaj  

Precipitation of MeV and Sub‐MeV Electrons Due to Combined Effects of EMIC and ULF Waves

, 2019
International audienceWe explore the mechanism of MeV and sub-MeV electron precipitations into the atmosphere in the outer radiation belt, through quasi-linear pitch-angle scattering by electromagnetic ion cyclotron (EMIC) waves, when strong ...
Zhang, X. -J., V. Angelopoulos, Angelopoulos, V., J.‐A. Sauvaud, X.‐J. Zhang, D. Mourenas, Mourenas, D., Sauvaud, J. -A., Artemyev, A. V., A. V. Artemyev   +9 more
core   +1 more source

Nonlinear compressional electromagnetic ion-cyclotron wavepackets in space plasmas [PDF]

Nonlinear Processes in Geophysics, 2005
The parametric coupling between large amplitude magnetic field-aligned circularly polarized electromagnetic ion-cyclotron (EMIC) waves and ponderomotively driven ion-acoustic perturbations in magnetized space plasmas is considered. A cubic nonlinear Schr&
I. Kourakis, I. Kourakis, P. K. Shukla
doaj  

EMIC wave spatial and coherence scales as determined from multipoint Van Allen Probe measurements

Geophysical Research Letters, 2016
Electromagnetic ion cyclotron (EMIC) waves can provide a strong source of energetic electron pitch angle scattering. These waves are often quite localized, thus their spatial extent can have a large effect on their overall scattering efficiency.
L. W. Blum, O. Agapitov, J. W. Bonnell, C. Kletzing, J. Wygant   +4 more
doaj   +1 more source

A statistical analysis of Electromagnetic Ion Cyclotron (EMIC) waves and their correlation to the 11-year solar cycle

, 2013
This thesis presents a statistical analysis of EMIC waves measured at Halley Research Station from 2008 through 2012. An introduction covering the origin of and theory behind EMIC waves is provided, along with a background covering previous statistical ...
Lindgren, Erik A
core  

EMIC waves converted from equatorial noise due to M/Q=2 ions in the plasmasphere: Observations from Van Allen Probes and Arase [PDF]

, 2019
Equatorial noise (EN) emissions are observed inside and outside the plasmapause. EN emissions are referred to as magnetosonic mode waves. Using data from Van Allen Probes and Arase, we found conversion from EN emissions to electromagnetic ion cyclotron ...
Kurita, S., R. B. Horne, K. Nomura, Boardsen, S.A., M. Shoji, Y. Kasahara, Kitamura, N., A. Matsuoka, Shiokawa, K., Machida, S., N. Kitamura, Kasahara, Y., Matsuda, S., Santolik, O., Wygant, J.F., S. Machida, S. Matsuda, O. Santolik, K. Keika, I. Shinohara, Horne, Richard B., Shinohara, I., Miyoshi, Y., Keika, K., S. A. Boardsen, Y. Miyoshi, Shoji, M., Nomura, K., S. Kurita, J. F. Wygant, K. Shiokawa, Matsuoka, A.   +31 more
core   +1 more source

A Case Study of Pc1 Waves Observed at the Polar Cap Associated with Proton Precipitation at Subauroral Latitudes

Atmosphere
The importance of ElectroMagnetic Ion Cyclotron (EMIC) ultra-low-frequency (ULF) waves (and their Pc1 counterparts) is connected to their critical role in triggering energetic particle precipitation from the magnetosphere to the conjugated ionosphere via
Giulia D’Angelo, Patrizia Francia, Marcello De Lauretis, Alexandra Parmentier, Tero Raita, Mirko Piersanti   +5 more
doaj   +1 more source

The spatial distributions, wave properties, and generation mechanisms of inner magnetosphere EMIC waves

, 2018
Electromagnetic Ion Cyclotron (EMIC) waves play an integral role in the dynamics of the Earth’s magnetosphere. Through wave-particle interactions, EMIC waves influence the particle populations present in the magnetosphere by causing heavy ion heating (up ...
Saikin, Anthony Aaron
core  

2D full-wave simulation of waves in space and tokamak plasmas

EPJ Web of Conferences, 2017
Simulation results using a 2D full-wave code (FW2D) for space and NSTX fusion plasmas are presented. The FW2D code solves the cold plasma wave equations using the finite element method.
Kim Eun-Hwa, Bertelli Nicola, Johnson Jay, Valeo Ernest, Hosea Joel   +4 more
doaj   +1 more source