Results 81 to 90 of about 782 (172)

On the loss mechanisms of radiation belt electron dropouts during the 12 September 2014 geomagnetic storm

Earth and Planetary Physics, 2020
Radiation belt electron dropouts indicate electron flux decay to the background level during geomagnetic storms, which is commonly attributed to the effects of wave-induced pitch angle scattering and magnetopause shadowing.
Xin Ma, Zheng Xiang, BinBin Ni, Song Fu, Xing Cao, Man Hua, DeYu Guo, YingJie Guo, XuDong Gu, ZeYuan Liu, Qi Zhu   +10 more
doaj   +1 more source

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

Discovery of 1 Hz Range Modulation of Isolated Proton Aurora at Subauroral Latitudes

Geophysical Research Letters, 2018
Isolated proton aurora (IPA) is a manifestation of the wave‐particle interaction visible at subauroral latitudes, with activity on many timescales. We herein present the first observational evidence of rapid luminous modulation of IPA correlated with ...
M. Ozaki, K. Shiokawa, Y. Miyoshi, R. Kataoka, M. Connors, T. Inoue, S. Yagitani, Y. Ebihara, C.‐W. Jun, R. Nomura, K. Sakaguchi, Y. Otsuka, H. A. Uchida, I. Schofield, D. W. Danskin   +14 more
doaj   +1 more source

Inclusion of Nonresonant Effects Into Quasi‐Linear Diffusion Rates for Electron Scattering by Electromagnetic Ion Cyclotron Waves

Geophysical Research Letters
Electromagnetic ion cyclotron (EMIC) waves are a key plasma mode affecting radiation belt dynamics. These waves are important for relativistic electron losses through scattering and precipitation into Earth's ionosphere.
Xiaofei Shi, Xin An, Anton Artemyev, Xiao‐Jia Zhang, Didier Mourenas, Vassilis Angelopoulos   +5 more
doaj   +1 more source

A Probabilistic Model for Global EMIC Wave Activity Using Van Allen Probes Observations

Earth and Space Science
Electromagnetic ion cyclotron (EMIC) waves play a key role in radiation belt dynamics through resonant interactions. However, their low occurrence probability, high variability, and spatial intermittency pose challenges for accurate modeling.
Sung Jun Noh, Steven K. Morley, Misa M. Cowee, Vania K. Jordanova   +3 more
doaj   +1 more source

Energetic Electron Precipitation Driven by Electromagnetic Ion Cyclotron Waves from ELFIN's Low Altitude Perspective. [PDF]

Space Sci Rev, 2023
Angelopoulos V, Zhang XJ, Artemyev AV, Mourenas D, Tsai E, Wilkins C, Runov A, Liu J, Turner DL, Li W, Khurana K, Wirz RE, Sergeev VA, Meng X, Wu J, Hartinger MD, Raita T, Shen Y, An X, Shi X, Bashir MF, Shen X, Gan L, Qin M, Capannolo L, Ma Q, Russell CL, Masongsong EV, Caron R, He I, Iglesias L, Jha S, King J, Kumar S, Le K, Mao J, McDermott A, Nguyen K, Norris A, Palla A, Roosnovo A, Tam J, Xie E, Yap RC, Ye S, Young C, Adair LA, Shaffer C, Chung M, Cruce P, Lawson M, Leneman D, Allen M, Anderson M, Arreola-Zamora M, Artinger J, Asher J, Branchevsky D, Cliffe M, Colton K, Costello C, Depe D, Domae BW, Eldin S, Fitzgibbon L, Flemming A, Frederick DM, Gilbert A, Hesford B, Krieger R, Lian K, McKinney E, Miller JP, Pedersen C, Qu Z, Rozario R, Rubly M, Seaton R, Subramanian A, Sundin SR, Tan A, Thomlinson D, Turner W, Wing G, Wong C, Zarifian A.   +85 more
europepmc   +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  

A Triggering Process for Nonlinear EMIC Waves Driven by the Compression of the Dayside Magnetosphere

Geophysical Research Letters
Using the Arase and Van Allen Probes satellite observations, we investigate the nonlinear electromagnetic ion cyclotron (EMIC) rising‐tone (RT) emissions with an increase of the solar wind dynamic pressure in the dayside magnetosphere.
C.‐W. Jun, Y. Miyoshi, S. Nakamura, M. Shoji, T. Hori, J. Bortnik, L. Lyons, I. Shinohara, A. Matsuoka   +8 more
doaj   +1 more source

Observations of co-existing rising and falling tone emissions of electromagnetic ion cyclotron waves

Earth, Planets and Space
We report observations of co-existing rising and falling tone emissions of electromagnetic ion cyclotron (EMIC) waves by THEMIS E spacecraft.
Biswajit Ojha, Yoshiharu Omura, Satyavir Singh, Gurbax S. Lakhina   +3 more
doaj   +1 more source

Occurrence Rates of Electromagnetic Ion Cyclotron (EMIC) Waves With Rising Tones in the Van Allen Probes Data Set. [PDF]

J Geophys Res Space Phys, 2023
Sigsbee K, Kletzing CA, Faden J, Smith CW.   +3 more
europepmc   +1 more source