Results 81 to 90 of about 835 (185)

Suprathermal Electron Evolution Under the Competition Between Plasmaspheric Plume Hiss Wave Heating and Collisional Cooling

Geophysical Research Letters, 2020
AbstractSuprathermal electrons are a major heat source of ionospheric plasma. How the suprathermal electrons evolve during their bounces inside the plasmasphere is a fundamental question for the magnetosphere‐ionosphere coupling. On the basis of Van Allen Probes observations and quasi‐linear simulations, we present here the first quantitative study on ...
Zhongshan Wang, Zhenpeng Su, Nigang Liu, Guyue Dai, Huinan Zheng, Yuming Wang, Shui Wang   +6 more
openaire   +1 more source

VLF waves from ground‐based transmitters observed by the Van Allen Probes: Statistical model and effects on plasmaspheric electrons

Geophysical Research Letters, 2017
Whistler mode very low frequency (VLF) waves from powerful ground‐based transmitters can resonantly scatter energetic plasmaspheric electrons and precipitate them into the atmosphere.
Qianli Ma, Didier Mourenas, Wen Li, Anton Artemyev, Richard M. Thorne   +4 more
doaj   +1 more source

Whistler mode wave growth and propagation in the prenoon magnetosphere [PDF]

, 2012
Pitch-angle scattering of electrons can limit the stably trapped particle flux in the magnetosphere and precipitate energetic electrons into the ionosphere. Whistler-mode waves generated by a temperature anisotropy can mediate this pitch-angle scattering
Degeling, A. W., Rankin, R., Watt, Clare E. J.   +2 more
core   +1 more source

Enhanced Radiation Exposure of Airline Crew and Passengers During the May 2024 Geomagnetic Storm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Enhanced radiation at aviation altitudes is a concern for flight crew and passengers. During space weather events, solar flares and coronal mass ejection (CME) driven shocks are sources of energetic particles that can reach Earth's near‐space environment and interact with its magnetic field and atmosphere.
Homayon Aryan, Jacob Bortnik, W. Kent Tobiska, Piyush Mehta, Benjamin Hogan, Rashmi Siddalingappa, Harshitha Challa   +6 more
wiley   +1 more source

Weak Turbulence in the Magnetosphere: Formation of Whistler Wave Cavity by Nonlinear Scattering

, 2012
We consider the weak turbulence of whistler waves in the in low-\beta\ inner magnetosphere of the Earth. Whistler waves with frequencies, originating in the ionosphere, propagate radially outward and can trigger nonlinear induced scattering by thermal ...
Crabtree, C., Galinsky, V., Ganguli, G., Mithaiwala, M., Rudakov, L., Shevchenko, V.   +5 more
core   +1 more source

Constructing the frequency and wave normal distribution of whistler-mode wave power [PDF]

, 2013
We introduce a new methodology that allows the construction of wave frequency distributions due to growing incoherent whistler-mode waves in the magnetosphere. The technique combines the equations of geometric optics (i.e.
Bekefi, Beutier, Bortnik, Bortnik, Bortnik, Bortnik, Bortnik, Bortnik, Chen, Chen, Chen, Chum, Chum, Church, Fejer, Glauert, Hikishima, Horne, Huang, Huang, Inan, Katoh, Katoh, Li, Li, Li, Li, Lyons, O'Hagan, Omura, Shprits, Su, Thorne, Watt   +33 more
core   +1 more source

Outer Radiation Belt Dynamics During the October 2012 Storm Revisited: Rapid Inward Radial Transport From a Dynamic Outer Boundary

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Earth's outer radiation belt electron flux is highly variable and can be enhanced by over an order of magnitude over timescales less than one day, as observed during the October 2012 storm. Previous studies of this storm (e.g., Reeves et al., 2013, https://doi.org/10.1126/science.1237743) have invoked local acceleration to explain this ...
L. G. Ozeke, I. R. Mann, L. Olifer, S. K. Morley, H. E. Spence   +4 more
wiley   +1 more source

Dependence of Plasmaspheric Hiss Power on ωpe/Ωce

Geophysical Research Letters
Plasmaspheric hiss waves play a key role in scattering energetic electrons and are often modeled in the inner magnetosphere using empirical hiss power maps parameterized by L shell.
Mingyue Lu, Hui Zhu, Yingying Zhao, Huicong Chen, Zhijie Qin, Zhenghao She   +5 more
doaj   +1 more source

Local Generation of High‐Frequency Plasmaspheric Hiss Observed by Van Allen Probes

Geophysical Research Letters, 2019
The generation of a high‐frequency plasmaspheric hiss (HFPH) wave observed by Van Allen Probes is studied in this letter for the first time. The wave has a moderate power spectral density (∼10−6 nT2/Hz), with a frequency range extended from 2 to 10 kHz ...
Zhaoguo He, Lunjin Chen, Xu Liu, Hui Zhu, Si Liu, Zhonglei Gao, Yong Cao   +6 more
doaj   +1 more source

Quasi-linear simulations of inner radiation belt electron pitch angle and energy distributions [PDF]

, 2016
“Peculiar” or “butterfly” electron pitch angle distributions (PADs), with minima near 90°, have recently been observed in the inner radiation belt. These electrons are traditionally treated by pure pitch angle diffusion, driven by plasmaspheric hiss ...
Albert, Jay M., Glauert, Sarah A., Horne, Richard B., Meredith, Nigel P., Starks, Michael J.   +4 more
core   +2 more sources