Results 41 to 50 of about 174 (149)

Electron Scattering by Plasmaspheric Hiss in a Nightside Plume [PDF]

Geophysical Research Letters, 2018
AbstractPlasmaspheric hiss is known to play an important role in radiation belt electron dynamics in high plasma density regions. We present observations of two crossings of a plasmaspheric plume by the Van Allen Probes on 26 December 2012, which occurred unusually at the post‐midnight‐to‐dawn sector between L ~ 4–6 during a geomagnetically quiet ...
Wenxun Zhang, Song Fu, Xudong Gu, Binbin Ni, Zheng Xiang, Danny Summers, Zhengyang Zou, Xing Cao, Yuequn Lou, Man Hua   +9 more
openaire   +1 more source

The distribution of plasmaspheric hiss wave power with respect to plasmapause location

Geophysical Research Letters, 2016
In this work, Van Allen Probes data are used to derive terrestrial plasmaspheric hiss wave power distributions organized by (1) distance away from the plasmapause and (2) plasmapause distance from Earth.
David M. Malaspina, Allison N. Jaynes, Cory Boulé, Jacob Bortnik, Scott A. Thaller, Robert E. Ergun, Craig A. Kletzing, John R. Wygant   +7 more
doaj   +1 more source

The interactions between ULF waves and cold charged particles in the Earth's magnetosphere

地球与行星物理论评, 2022
In the solar wind-magnetosphere coupling processes, many kinds of plasma waves can be excited in the Earth's magnetosphere including ULF waves, hiss waves, chorus waves, etc. Among these waves, ULF waves are featured by the lowest wave frequency (1 mHz～1
Jie Ren, Qiugang Zong
doaj   +1 more source

Ray Tracing Method in a General Non‐Dipole Magnetic Field

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract We present a new general mathematical formulation of the Eikonal equations for ray tracing, which can use any internal magnetic field model. The analytical and tractable expressions are conveniently based on a vector formalism, which is independent of any coordinate system.
P.‐L. Blelly, J.‐F. Ripoll, A. Dubois, R. B. Horne, A. Marchaudon   +4 more
wiley   +1 more source

The Species‐ and Energy‐Dependent Effects of EMIC Waves on Ring Current Ions

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Wave‐particle interactions are a major mechanism responsible for dissipating energy and redistributing particles within geospace. This study investigates the effects of electromagnetic ion cyclotron waves on ring current ions. We present a case study of the effects of EMIC waves on the ring current during the 15 August 2015 geomagnetic storm ...
Cristian P. Ferradas, Suk‐Bin Kang, Mei‐Ching Fok, Gonzalo Cucho‐Padin, Maria Usanova, Bhanu Remya   +5 more
wiley   +1 more source

Cross Correlation Between Plasmaspheric Hiss Waves and Enhanced Radiation Levels at Aviation Altitudes

Space Weather
Enhanced radiation in the Earth's atmosphere can pose serious hazards to pilots, aircraft passengers, and commercial space travelers. Recent results have shown, statistically, that there is a strong correlation between dose rates observed by Automated ...
Homayon Aryan, Jacob Bortnik, W. Kent Tobiska, Piyush Mehta, Rashmi Siddalingappa, Benjamin Hogan   +5 more
doaj   +1 more source

Radial diffusion simulations of the 20 September 2007 radiation belt dropout [PDF]

Annales Geophysicae, 2014
This is a study of a dropout of radiation belt electrons, associated with an isolated solar wind density pulse on 20 September 2007, as seen by the solid-state telescopes (SST) detectors on THEMIS (Time History of Events and Macroscale Interactions ...
J. Albert
doaj   +1 more source

Self‐Limiting of Artificial Electron Radiation Belts: Evidence From the Starfish Prime High‐Altitude Nuclear Explosion

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The 1962 Starfish Prime high‐altitude 1.4‐megaton nuclear detonation injected large amounts of fission‐produced energetic electrons into the inner magnetosphere (L = 1.12), creating an intense artificial radiation belt that persisted for years. In this study, we revisit historical data from this unprecedented event to investigate the potential
L. Olifer, I. R. Mann
wiley   +1 more source

Enhanced Radiation Levels at Aviation Altitudes and Their Relationship to Plasma Waves in the Inner Magnetosphere

Space Weather, 2023
It is believed that galactic cosmic rays and solar energetic particles are the two major sources of ionizing radiation. However, the radiation source may also be due to relativistic electrons that are associated with precipitation from the Van Allen ...
Homayon Aryan, Jacob Bortnik, W. Kent Tobiska, Piyush Mehta, Rashmi Siddalingappa   +4 more
doaj   +1 more source

Local Evolution of a Prenoon Drainage Plume

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Plasmaspheric drainage plumes are typically observed in the postnoon sector during geomagnetic storms, but their local evolution in the prenoon sector remains poorly understood. Here, we report in situ observations from the Van Allen Probe, revealing multiple localized enhancements in cold electron density near apogee in the prenoon sector ...
Suk‐Bin Kang, Mei‐Ching Fok, Cristian Ferradas, Alex Glocer, Megha Pandya, J. D. Huba   +5 more
wiley   +1 more source