Results 51 to 60 of about 5,592 (185)

Abrupt Disappearance of Plasmaspheric Hiss Inside the Magnetic Dip

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Plasmaspheric hiss plays an important role in radiation belt electron dynamics, and its excitation and propagation have long attracted attention. During a substorm, Van Allen Probe B observed the disappearance of plasmaspheric hiss at the magnetic dip, which was driven by the injection of energetic protons.
Yan Zhuang, Chao Yue, Shan Wang, Haimeng Li, Sibo Xu, Xu‐Zhi Zhou, Qiu‐Gang Zong   +6 more
wiley   +1 more source

Low-altitude measurements of 2–6 MeV electron trapping lifetimes at 1.5 ≤ L ≤ 2.5 [PDF]

, 2007
During the Halloween Storm period (October–November 2003), a new Van Allen belt electron population was powerfully accelerated. The inner belt of electrons formed in this process decayed over a period of days to years. We have examined quantitatively the
Baker, D.N., Glauert, S.A., Horne, R.B., Kanekal, S.G., Meredith, N.P.   +4 more
core   +2 more sources

Enhancing Low‐Latitude Ionospheric Irregularity Prediction With Generalized Linear Models

Space Weather, Volume 24, Issue 3, March 2026.
Abstract The ionosphere poses challenges for accurate forecasting due to its complexity and variability. Irregularities in the lower ionosphere are influenced by local time, season, geographic location, solar activity and space weather, complicating precise predictions.
Alysson Brhian, Marco A. Ridenti, Francisco Azpilicueta, Mauricio Gende, Marisa Roberto   +4 more
wiley   +1 more source

Development of a Systematic Model for Study on the Phenomena of Ionospheric and Geomagnetic Variations [PDF]

Journal of Astronomy and Space Sciences, 1999
Solar activities ejecting high energy particles influence satellites and satellite communications as well as perturb geomagnetic fields. To understand space environments near the Earth being influenced by the Sun, we must study about the magnetosphere ...
Yoo Surn Pyo, Hwang-Jae Rhee, Min-Geun Kim, Eunhwa Kim, Sung-Hee Song, Jinny Lee, Dong-Hun Lee   +6 more
doaj  

Characteristics of geomagnetic cascading of ultra-high energy photons at the southern and northern sites of the Pierre Auger Observatory [PDF]

, 2006
Cosmic-ray photons above 10^19 eV can convert in the geomagnetic field and initiate a preshower, i.e. a particle cascade before entering the atmosphere.
Abraham, Abu-Zayyad, Aharonian, Ave, Ave, Ave, B. Wilczyńska, Bednarek, Bertou, Bhattacharjee, D. Góra, Eidelmann, Erber, Fukushima, H. Wilczyński, Halzen, Homola, Homola, J. Pe¸kala, Kalmykov, Landau, M. Risse, McBreen, Migdal, P. Homola, Pierog, Plyasheshnikov, R. Engel, Risse, Risse, Risse, Rubtsov, Sarkar, Shinozaki, Stanev, Vankov, Vankov   +36 more
core   +2 more sources

The working of the IGRF 2000 Task Force [PDF]

Earth, Planets and Space, 2014
At its meeting in July 1999, the IAGA Working Group for Analysis of the Global and Regional Geomagnetic Field and Secular Variation (WG V-8) felt unable to decide on a main-field model to use for IGRF 2000. It therefore set up a small Task Force with the remit to produce a model by the end of the year. This paper is the Chairman’s report of the working
openaire   +1 more source

Ionospheric Characterization Using VLF Whistlers

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Broadband very low frequency (VLF, 3–30 kHz) energy emitted from lightning travels long distances in subionospheric propagation modes. Some of this energy couples into the ionosphere and travels to satellite altitudes along a predominantly field‐aligned path in what is known as a “whistler” propagation mode. Along this path, these VLF signals (
E. R. Worthington, M. B. Cohen
wiley   +1 more source

Locations of Auroral Kilometric Radiation Bursts Inferred From Multi-Spacecraft Wideband Cluster VLBI Observations i: Description of Technique and Initial Results

, 2003
The Cluster Wideband Data instrument has been used to determine the locations of auroral kilometric radiation (AKR) using very long baseline interferometry.
Alexander, Alexander, Alexander, Barton, Burns, Ergun, Feldstein, Frank, Gaelzer, Gaelzer, Gallagher, Gallagher, Gurnett, Gurnett, Huff, Kaiser, Kaiser, Kurth, Louarn, R. L. Mutel, Schreiber, Wu   +21 more
core   +1 more source

Intense Ground Magnetic Perturbations During the 2024 May and October Geomagnetic Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract The May and October 2024 geomagnetic storms represent two of the most intense space weather events of Solar Cycle 25. While differing in global intensity, both storms produced extreme ionospheric disturbances, including equatorward auroral expansion to mid‐latitudes and rapid geomagnetic variations (dH/dt $\text{dH}/\text{dt}$).
P. De Michelis, E. Consolini, F. Giannattasio, G. Consolini   +3 more
wiley   +1 more source

Relativistic microburst storm characteristics: Combined satellite and ground-based observations [PDF]

, 2010
We report a comparison of Solar Anomalous Magnetospheric Particle Explorer detected relativistic electron microbursts and short-lived subionospheric VLF perturbations termed FAST events, observed at Sodankyl Geophysical Observatory, Finland, during 2005.
Bortnik, Jacob, Clilverd, Mark A., Dietrich, Sarah, Raita, Tero, Rodger, Craig J.   +4 more
core   +1 more source