Results 61 to 70 of about 30,333 (190)

Cre Experiment on KITSAT-1 [PDF]

Journal of Astronomy and Space Sciences, 1994
The Cosmic Ray Experiment (CRE) is one of the modules flown on board the KITSAT-1 satellite and consists of two sub-systems: the Total Dose Experiment (TDE) and the Cosmic Particle Experiment (CPE).
Young-Hoon Shin, Kyoung-Wook Min, Young-Wan Choi, Sung-Heon Kim   +3 more
doaj  

Evidence of Microbursts Observed Near the Equatorial Plane in the Outer Van Allen Radiation Belt

Geophysical Research Letters, 2018
We present the first evidence of electron microbursts observed near the equatorial plane in Earth's outer radiation belt. We observed the microbursts on 31 March 2017 with the Magnetic Electron Ion Spectrometer and Radiation Belt Storm Probes Ion ...
Mykhaylo Shumko, Drew L. Turner, T. P. O'Brien, Seth G. Claudepierre, John Sample, D. P. Hartley, Joseph Fennel, J. Bernard Blake, Matina Gkioulidou, Donald G. Mitchell   +9 more
doaj   +1 more source

Radiation belt electron acceleration by chorus waves during the 17 March 2013 storm [PDF]

, 2014
Local acceleration driven by whistler-mode chorus waves is fundamentally important for accelerating seed electron populations to highly relativistic energies in the outer radiation belt.
Baker, D. N., Blake, J. B., Bortnik, J., Claudepierre, S., Fennell, Joseph F., Green, J. C., Hospodarsky, G. B., Kanekal, S. G., Kletzing, C A., Kurth, W. S., Li, W., Ma, Q., Ni, B., Reeves, Geoffrey, Spence, Harlan E., Thorne, R. M.   +15 more
core   +2 more sources

Understanding the Mechanisms of Radiation Belt Dropouts Observed by Van Allen Probes [PDF]

Journal of Geophysical Research: Space Physics, 2017
AbstractTo achieve a better understanding of the dominant loss mechanisms for the rapid dropouts of radiation belt electrons, three distinct radiation belt dropout events observed by Van Allen Probes are comprehensively investigated. For each event, observations of the pitch angle distribution of electron fluxes and electromagnetic ion cyclotron (EMIC)
Zheng Xiang, Weichao Tu, Xinlin Li, Binbin Ni, S. K. Morley, D. N. Baker   +5 more
openaire   +1 more source

PreMevE Update: Forecasting Ultra‐Relativistic Electrons Inside Earth's Outer Radiation Belt

Space Weather, 2021
Energetic electrons inside Earth's Van Allen belts pose a major radiation threat to space‐borne electronics that often play vital roles in modern society. Ultra‐relativistic electrons with energies greater than or equal to two megaelectron‐volt (MeV) are
Saurabh Sinha, Yue Chen, Youzuo Lin, Rafael Pires de Lima   +3 more
doaj   +1 more source

Van Allen probes, NOAA, GOES, and ground observations of an intense EMIC wave event extending over 12 h in magnetic local time [PDF]

, 2015
Although most studies of the effects of EMIC waves on Earth's outer radiation belt have focused on events in the afternoon sector in the outer plasmasphere or plume region, strong magnetospheric compressions provide an additional stimulus for EMIC wave ...
Baker, D. N., Engebretson, M. J., Gkioulidou, M., Horne, R. B., Huang, C.-L., Kletzing, C. A., Lessard, M. R., Mann, I. R., Oksavik, K., Omura, Y., Posch, J. L., Raita, T ., Reeves, G. D., Shiokawa, K., Singer, H. J., Smith, C. W., Spence, H. E., Wygant, J. R.   +17 more
core   +1 more source

Observations of Relativistic Electron Enhancement and Butterfly Pitch Angle Distributions at Low L (<3)

Geophysical Research Letters
Electrons in Earth's outer radiation belt are highly dynamic, with fluxes changing by up to orders of magnitude. The penetration of electrons from the outer belt to the inner belt is one such change observed during geomagnetic storms and was previously ...
D. O'Brien, X. Li, L. Khoo, R. S. Selesnick, B. Hogan, H. Zhao, Y. Mei, V. Hoxie, D. N. Baker, S. G. Kanekal   +9 more
doaj   +1 more source

Opening the Black Box of the Radiation Belt Machine Learning Model

Space Weather, 2023
Many Machine Learning (ML) systems, especially deep neural networks, are fundamentally regarded as black boxes since it is difficult to fully grasp how they function once they have been trained. Here, we tackle the issue of the interpretability of a high‐
Donglai Ma, Jacob Bortnik, Xiangning Chu, Seth G. Claudepierre, Qianli Ma, Adam Kellerman   +5 more
doaj   +1 more source

The energization of relativistic electrons in the outer Van Allen radiation belt [PDF]

Nature Physics, 2007
The origin and dynamics of the Van Allen radiation belts is one of the longest-standing questions of the space age, and one that is increasingly important for space applications as satellite systems become more sophisticated, smaller and more susceptible to radiation effects.
Yue Chen, Geoffrey D. Reeves, Reiner H. W. Friedel   +2 more
openaire   +1 more source

Lightning-induced neutrons as a possible source of charged particles in the Earth’s inner radiation belt

Earth and Planetary Physics
The Van Allen radiation belts are doughnut-shaped zones surrounding Earth, filled with highly energetic charged particles whose sources or loss mechanisms have been investigated for decades. As for the inner belt, cosmic ray albedo neutron decay (CRAND),
QuanQi Shi, ChenYao Han, Qiu-Gang Zong, Alexander Degeling, Shuo Wang, SuiYan Fu, PengZhi He   +6 more
doaj   +1 more source