Results 71 to 80 of about 2,661,724 (245)

Generation and Characteristics of Unusual High Frequency EMIC Waves [PDF]

Geophysical Research Letters, 2019
AbstractWe report unusual Electromagnetic Ion Cyclotron (EMIC) waves with a very narrow frequency bandwidth, closely following and approaching the proton gyrofrequency. One interesting case analysis shows that magnetosonic waves, anisotropic suprathermal proton distributions, and high frequency EMIC waves are closely related.
S. Teng, W. Li, X. Tao, Q. Ma, Y. Wu, L. Capannolo, X.‐C. Shen, L. Gan   +7 more
openaire   +1 more source

Direct Evidence of the Pitch Angle Scattering of Relativistic Electrons Induced by EMIC Waves

Geophysical Research Letters, 2020
In this study, we analyze an electromagnetic ion cyclotron (EMIC) wave event of rising tone elements recorded by the Van Allen Probes. The pitch angle distributions of relativistic electrons exhibit a direct response to the two elements of EMIC waves: at
Hui Zhu, Lunjin Chen, Seth G. Claudepierre, Liheng Zheng   +3 more
doaj   +1 more source

Competing source and loss mechanisms due to wave-particle interactions in Earth’s outer radiation belt during the 30 September to 3 October 2012 geomagnetic storm [PDF]

, 2014
Drastic variations of Earth’s outer radiation belt electrons ultimately result from various competing source, loss, and transport processes, to which wave-particle interactions are critically important.
Angelopoulos, V., Baker, D. N., Blake, J. B., Bortnik, J., Claudepierre, S., Henderson, M. G., Huang, Chia-Lin L., Kletzing, C A., Kurth, W. S., Li, W., Ma, Q., Mann, I. R., Morley, S. K., Ni, B., Reeves, Geoffrey, Rodriguez, J. V., Spence, Harlan E., Thorne, R. M., Turner, D. L., Usanova, M.   +19 more
core   +3 more sources

Precipitation of Radiation Belt Electrons by EMIC Waves With Conjugated Observations of NOAA and Van Allen Satellites

Geophysical Research Letters, 2018
In this letter, we present unique conjugated satellite observations of MeV relativistic electron precipitation caused by electromagnetic ion cyclotron (EMIC) waves. On the outer boundary of the plasmasphere, the Van Allen probe observed EMIC waves.
Zhigang Yuan, Kun Liu, Xiongdong Yu, Fei Yao, Shiyong Huang, Dedong Wang, Zhihai Ouyang   +6 more
doaj   +1 more source

Wave-induced loss of ultra-relativistic electrons in the Van Allen radiation belts. [PDF]

, 2016
The dipole configuration of the Earth's magnetic field allows for the trapping of highly energetic particles, which form the radiation belts. Although significant advances have been made in understanding the acceleration mechanisms in the radiation belts,
Agapitov, Oleksiy V, Aseev, Nikita A, Baker, Daniel N, Drozdov, Alexander Y, Engebretson, Mark J, Kellerman, Adam C, Raita, Tero J, Shprits, Yuri Y, Spasojevic, Maria, Spence, Harlan E, Usanova, Maria E, Zhelavskaya, Irina S, Zhu, Hui   +12 more
core   +1 more source

Spatial Distribution of Pc1/EMIC Waves Relative to the Nightside Ionospheric Footprint of the Plasmapause

Journal of Geophysical Research: Space Physics
Pc1 pulsations cover the 0.2–5 Hz frequency range with electromagnetic ion cyclotron (EMIC) waves of magnetospheric origin being generally accepted as their most important source.
T. Bozóki, B. Heilig
semanticscholar   +1 more source

EMIC waves observed by Cluster near the plasmapause

Journal of Geophysical Research: Space Physics, 2013
AbstractWe analyze a long‐duration electromagnetic ion cyclotron (EMIC) wave event seen in the inner magnetosphere in order to understand the propagation characteristics of these waves in the vicinity of the plasmapause. The study takes advantage of the south to north orbit of the four‐satellite Cluster constellation as it passed through perigee at L ~ 
Liu, Y. H., Fraser, B. J., Menk, F. W.
openaire   +2 more sources

Interaction of Inner Heliosheath Ions with Electromagnetic Ion Cyclotron Waves

The Astrophysical Journal, 2023
Inner heliosheath (IHS) ions are expected to be exposed to various waves, shocks, and turbulence, which can affect ion distributions and thus their charge-exchange rates with interstellar neutral atoms.
Dae-Young Lee, Sung-Jun Noh
doaj   +1 more source

A summary of the BARREL campaigns: Technique for studying electron precipitation. [PDF]

, 2015
BARREL observed electron precipitation over wide range of energy and timescalesPrecipitating electron distribution is determined using spectroscopy for 19 January 2013 eventBARREL timing data has accuracy within sampling interval of 0.05 ...
Anderson, BR, Bowers, GS, Halford, AJ, Liang, X, McCarthy, MP, Millan, RM, Sample, JG, Smith, DM, Woodger, LA   +8 more
core   +2 more sources

A statistical analysis of Electromagnetic Ion Cyclotron (EMIC) waves and their correlation to the 11-year solar cycle [PDF]

, 2013
This thesis presents a statistical analysis of EMIC waves measured at Halley Research Station from 2008 through 2012. An introduction covering the origin of and theory behind EMIC waves is provided, along with a background covering previous statistical ...
Lindgren, Erik A
core   +1 more source