Results 61 to 70 of about 412 (169)

Enabling High‐Fidelity Wave‐Particle Interaction Studies: A Novel Filtering for Isolating Whistlers From Spacecraft Noise

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Resolving the mixture of natural plasma waves and persistent spacecraft interference is a fundamental challenge in space physics, as it obstructs the analysis of wave‐particle interactions and energy transport processes. Traditional signal decomposition methods often fail to adequately separate these components due to their time‐varying ...
Fulin Shi, Li Zeng, Yuhui Fu, Jinbin Cao, Zhima Zeren, Dapeng Liu, Dehe Yang   +6 more
wiley   +1 more source

Frequency‐Drifting Plasmaspheric Hiss: A Statistical Study From the Van Allen Probes Data

Geophysical Research Letters
Plasmaspheric hiss, a whistler‐mode emission confined in the high‐density plasmasphere, is of great interest to the space community attributed to its important role in inner magnetospheric dynamics.
Siyang Yi, Nigang Liu, Yi Xie, Zhaoguo He, Jiang Yu, Jun Cui   +5 more
doaj   +1 more source

Distinct Formation and Evolution Characteristics of Outer Radiation Belt Electron Butterfly Pitch Angle Distributions Observed by Van Allen Probes

Geophysical Research Letters, 2020
Using Van Allen Probes pitch angle‐resolved electron flux data, we report intriguing events of electron butterfly pitch angle distributions (PADs) at L > ~5.5 on the nightside with distinct durations, i.e., about 9 hr for the 28–29 April 2013 event and ...
Binbin Ni, Ling Yan, Song Fu, Xudong Gu, Xing Cao, Zheng Xiang, Yuannong Zhang   +6 more
doaj   +1 more source

Plasmaspheric High‐Frequency Whistlers as a Candidate Cause of Shock Aurora at Earth

Geophysical Research Letters, 2023
Auroral brightening driven by interplanetary shocks on Earth's closed magnetic field lines is commonly attributed to the 0.1–10 keV electron precipitations by electron cyclotron harmonic waves and whistler‐mode chorus waves in the low‐density region.
Nigang Liu, Zhenpeng Su, Yuyue Jin, Zhaoguo He, Jiang Yu, Kun Li, Zuzheng Chen, Jun Cui   +7 more
doaj   +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

Machine Learning‐Ready Data Sets for the Analysis and Nowcasting of Atmospheric Radiation at Aviation Altitudes

Space Weather, Volume 24, Issue 3, March 2026.
Abstract Nowcasting and forecasting of the radiation environment in the Earth's lower atmosphere are critical for the safety of aircraft and spacecraft crews and passengers. Currently, this problem is addressed by employing statistical and physics‐based models that take into account particle transport and precipitation.
V. M. Sadykov, Z. M. Watkins, D. Kempton, W. Jones, S. K. C, G. T. Goodwin, X. He, W. K. Tobiska, I. Kitiashvili, C. Mertens, S. Ranjan, D. G. Deardorff, R. Spaulding   +12 more
wiley   +1 more source

A Comparative Study on the Distributions of Incoherent and Coherent Plasmaspheric Hiss

Geophysical Research Letters, 2021
AbstractWe perform a comparative study on the distributions of incoherent and coherent plasmaspheric hiss, based on the Van Allen Probe data. The statistics show that incoherent hiss (∼10–20 pT) is widely distributed in dayside plasmasphere, with peak frequencies below 500 Hz; intense coherent hiss (amplitudes up to 80 pT) occurs in outer plasmasphere ...
Zhaoguo He, Jiang Yu, Kun Li, Nigang Liu, Zewen Chen, Jun Cui   +5 more
openaire   +1 more source

Effects of the May 2024 Solar Storm on the Earth's Radiation Belts Observed by CALET on the International Space Station

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract In May 2024, extraordinary solar activity triggered a powerful solar storm, impacting Earth and producing the extreme geomagnetic storm of 10‐11 May, the most intense since 2003. This had significant effects on the magnetosphere, leading to the creation of a new long‐lasting component of relativistic electrons and to flux changes in the South ...
A. Ficklin, A. Bruno, L. Blum, N. Cannady, T. G. Guzik, R. Kataoka, K. Munakata, Y. Akaike, S. Torii   +8 more
wiley   +1 more source

Modeling the effects of radial diffusion and plasmaspheric hiss on outer radiation belt electrons [PDF]

, 2007
We simulate the behaviour of relativistic (976 keV) electrons in the outer radiation belt (3 ≤ L ≤ 7) during the first half of the CRRES mission. We use a 1d radial diffusion model with losses due to pitch-angle scattering by plasmaspheric hiss expressed
Glauert, S.A., Horne, R.B., Lam, M.M., Meredith, N.P.   +3 more
core   +1 more source

Bursty Precipitation of Relativistic Electrons Unveiled by CIRBE/REPTile‐2 Measurements and Their Physical Implications

AGU Advances, Volume 7, Issue 1, February 2026.
Abstract Energetic electron precipitation plays a pivotal role in shaping Earth's radiation belt dynamics and drives significant physical and chemical changes in the upper atmosphere. However, the detailed mechanisms governing the loss of relativistic electrons have remained unclear, largely due to the limited energy coverage and coarse resolution of ...
Zheng Xiang, Xinlin Li, Daniel N. Baker, Qianli Ma, Yang Mei, Declan O’Brien, Hong Zhao, David Brennan, Theodore Sarris, Yoshizumi Miyoshi, Yoshiya Kasahara, Takefumi Mitani, Takeshi Takashima, Michael A. Temerin   +13 more
wiley   +1 more source