Results 11 to 20 of about 166,601 (310)

Determining the size of lightning‐induced electron precipitation patches [PDF]

Journal of Geophysical Research: Space Physics, 2002
We analyze Trimpi signatures during 23 and 24 April 1994 at four sites on or near the Antarctic Peninsula (Palmer, Faraday, Rothera, and Halley) on subionospheric VLF signals received from four U.S. naval transmitters (NAA, NSS, NLK, and NPM). Electron precipitation patches are found to be large, i.e., ∼1500 km × 600 km, with the longer axis orientated
Clilverd, Mark A., Nunn, David, Lev-Tov, Sean J., Inan, Umran S., Dowden, Richard L., Rodger, Craig J., Smith, Andy J.   +6 more
openaire   +4 more sources

Energetic electron precipitation during sawtooth injections [PDF]

Annales Geophysicae, 2007
We present simultaneous riometer observations of cosmic noise absorption in the nightside and dawn-noon sectors during sawtooth particle injections during 18 April 2002.
A. J. Kavanagh, A. J. Kavanagh, G. Lu, E. F. Donovan, G. D. Reeves, F. Honary, J. Manninen, T. J. Immel   +7 more
doaj   +3 more sources

Electron precipitation caused by intense whistler-mode waves: combined effects of anomalous scattering and phase bunching

Frontiers in Astronomy and Space Sciences, 2023
Resonant interactions with whistler-mode waves are a crucial mechanism that drives the precipitation of energetic electrons. Using test particle simulations, we investigated the impact of nonlinear interactions of whistler-mode waves on electron ...
Longzhi Gan, Wen Li, Miroslav Hanzelka, Qianli Ma, Qianli Ma, Jay M. Albert, Anton V. Artemyev   +6 more
doaj   +1 more source

Using mutual information to investigate non-linear correlation between AE index, ULF Pc5 wave activity and electron precipitation

Frontiers in Astronomy and Space Sciences, 2022
In this study, we use mutual information from information theory to investigate non-linear correlation between geomagnetic activity indicated by auroral electrojet (AE) index with both the global ultra low frequency (ULF) Pc5 wave power and medium energy
Sanni Hoilijoki, Emilia K. J. Kilpua, Adnane Osmane, Milla M. H. Kalliokoski, Harriet George, Mikko Savola, Timo Asikainen   +6 more
doaj   +1 more source

Quantifying the Size and Duration of a Microburst‐Producing Chorus Region on 5 December 2017

Geophysical Research Letters, 2022
Microbursts are impulsive (30 keV) precipitation (FIREBIRD II and AC6 CubeSats, POES) to determine the size of the microburst‐producing chorus source region beginning on 5 December 2017.
S. S. Elliott, A. W. Breneman, C. Colpitts, J. M. Pettit, C. A. Cattell, A. J. Halford, M. Shumko, J. Sample, A. T. Johnson, Y. Miyoshi, Y. Kasahara, C. M. Cully, S. Nakamura, T. Mitani, T. Hori, I. Shinohara, K. Shiokawa, S. Matsuda, M. Connors, M. Ozaki, J. Manninen   +20 more
doaj   +1 more source

Auroral Ionosphere Model with PC Index as an Input

Atmosphere, 2022
Auroral Ionosphere Model (AIM-E) is designed to calculate chemical content in the high-latitude E region ionosphere and takes into account both the solar EUV radiation and the electron precipitation of magnetospheric origin.
Vera Nikolaeva, Evgeny Gordeev, Alexander Nikolaev, Denis Rogov, Oleg Troshichev   +4 more
doaj   +1 more source

Energetic electron precipitation during substorm injection events: High-latitude fluxes and an unexpected midlatitude signature [PDF]

, 2008
Geosynchronous Los Alamos National Laboratory (LANL-97A) satellite particle data, riometer data, and radio wave data recorded at high geomagnetic latitudes in the region south of Australia and New Zealand are used to perform the first complete modeling ...
Menk, F. W., Menk, F.W., Neil. R. Thomson, Brundell, J.B., Annika Seppälä, John Bähr, Reiner H. W. Friedel, Neil Cobbett, Tracy Moffat‐Griffin, Andrew J. Kavanagh, Craig J. Rodger, Brundell, J., Kavanagh, Andrew J., Rodger, C. J., James Brundell, Seppälä, A., Kavanagh, A.J., Friedel, R.H.W., Thomson, N. R., Bähr, J., Clilverd, M. A., Rodger, C.J., Friedel, R. W. H., Moffat-Griffin, T., Thomson, N.R., Frederick W. Menk, Cobbett, N., Clilverd, M.A., Mark A. Clilverd   +28 more
core   +1 more source

Short-duration Electron Precipitation Studied by Test Particle Simulation [PDF]

Journal of Astronomy and Space Sciences, 2015
Energy spectra of electron microbursts from 170 keV to 340 keV have been measured by the solid-state detectors aboard the low-altitude (680 km) polar-orbiting Korean STSAT-1 (Science and Technology SATellite).
Jaejin Lee, Kyung-Chan Kim, Jong-Gil Lee
doaj   +1 more source

ASHLEY: A New Empirical Model for the High‐Latitude Electron Precipitation and Electric Field

Space Weather, 2021
In this study, a new high‐latitude empirical model is introduced, named for Auroral energy Spectrum and High‐Latitude Electric field variabilitY (ASHLEY).
Qingyu Zhu, Yue Deng, Astrid Maute, Liam M. Kilcommons, Delores J. Knipp, Marc Hairston   +5 more
doaj   +1 more source

Relativistic electron precipitation

Geophysical Research Letters, 1979
Intense atmospheric bremsstrahlung X‐rays of energies ≳ 120 keV were detected by a balloon borne X‐ray experiment on September 30, 1976, flown from Fairbanks, Alaska. The X‐ray energy spectra have been obtained and compared to the primary electron energy spectra responsible for the X‐rays.
G. K. Parks, C. Gurgiolo, R. West
openaire   +1 more source