Results 51 to 60 of about 13,240 (212)

Observation of high‐frequency electrostatic waves in the vicinity of the reconnection ion diffusion region by the spacecraft of the Magnetospheric Multiscale (MMS) mission

Geophysical Research Letters, 2016
We report Magnetospheric Multiscale observations of high‐frequency electrostatic waves in the vicinity of the reconnection ion diffusion region on the dayside magnetopause.
M. Zhou, M. Ashour‐Abdalla, J. Berchem, R. J. Walker, H. Liang, M. El‐Alaoui, M. L. Goldstein, P.‐A. Lindqvist, G. Marklund, Y. V. Khotyaintsev, R. E. Ergun, Victoria Wilder, C. T. Russell, R. J. Strangeway, C. Zhao, W. R. Paterson, B. L. Giles, C. J. Pollock, R. B. Torbert, J. L. Burch, J. C. Dorelli, D. J. Gershman, L. A. Avanov, B. Lavraud, M. O. Chandler   +24 more
doaj   +1 more source

Kinetic structure and wave properties associated with sharp dipolarization front observed by Cluster [PDF]

Annales Geophysicae, 2012
Multiple dipolarization fronts (DFs) were observed by Cluster spacecraft in the magnetotail during a substorm. These DFs were kinetic structures, embedded in the bursty plasma flow, and moved earthward (mainly) and dawnward.
S. Y. Huang, S. Y. Huang, M. Zhou, M. Zhou, X. H. Deng, X. H. Deng, Z. G. Yuan, Y. Pang, Q. Wei, W. Su, H. M. Li, Q. Q. Wang   +11 more
doaj   +1 more source

Van Allen Probes observations of oxygen cyclotron harmonic waves in the inner magnetosphere

Geophysical Research Letters, 2016
Waves with frequencies in the vicinity of the oxygen cyclotron frequency and its harmonics have been regularly observed on the Van Allen Probes satellites during geomagnetic storms.
M. E. Usanova, D. M. Malaspina, A. N. Jaynes, R. J. Bruder, I. R. Mann, J. R. Wygant, R. E. Ergun   +6 more
doaj   +1 more source

Roles of Fast-Cyclotron and Alfven-Cyclotron Waves for the Multi-Ion Solar Wind

, 2012
Using linear Vlasov theory of plasma waves and quasi-linear theory of resonant wave-particle interaction, the dispersion relations and the electromagnetic field fluctuations of fast and Alfven waves are studied for a low-beta multi-ion plasma in the ...
A. Barnes, A. Osmane, B.D. Chandran, B.E. Goldstein, B.T. MacBride, C.W. Smith, E. Marsch, E. Marsch, E.N. Parker, F. Sahraoui, F. Sahraoui, G. Gogoberidze, J. He, J.C. Perez, J.J. Podesta, J.L. Kohl, J.V. Hollweg, M. Neugebauer, M. Neugebauer, Ming Xiong, P. Goldreich, P.A. Isenberg, R.J. Leamon, R.T. Wicks, S. Dasso, S.A. Markovskii, S.A. Markovskii, S.D. Bale, S.P. Gary, S.P. Gary, S.P. Gary, S.P. Gary, S.R. Cranmer, S.R. Cranmer, T.H. Stix, T.S. Horbury, W.A. Coles, W.H. Matthaeus, W.I. Axford, X. Li, X. Li, X. Li, Xing Li   +42 more
core   +1 more source

Simultaneous Observations and Combined Effects of Electromagnetic Ion Cyclotron Waves and Magnetosonic Waves

Geophysical Research Letters, 2021
Magnetosonic (MS) waves and Electromagnetic ion cyclotron (EMIC) waves are important plasma waves in the magnetosphere. Using the Van Allen Probes observations from 2012 to 2017, we constructed the global distribution of simultaneous occurrence of MS and
S. Teng, Q. Ma, X. Tao
doaj   +1 more source

Coronal ion-cyclotron beam instabilities within the multi-fluid description

, 2007
Spectroscopic observations and theoretical models suggest resonant wave-particle interactions, involving high-frequency ion-cyclotron waves, as the principal mechanism for heating and accelerating ions in the open coronal holes.
Bernstein, Brekke, Cap, Cranmer, E. Marsch, Feldman, Fontenla, Gabriel, Hackenberg, Hollweg, Hollweg, Innes, Isenberg, Kohl, Li, Markovskii, Markovskii, Marsch, Mecheri, Ofman, R. Mecheri, Schrijver, Tu, Vocks, Voitenko, Weinberg, Xie   +26 more
core   +1 more source

Generation of Electromagnetic Ion Cyclotron Wave by Hot Injection of Ion Beam for Ring Distribution with A.C. Electric Field in Jovian Magnetosphere

East European Journal of Physics
This paper investigates the electromagnetic ion-cyclotron waves detected by the Ulysses spacecraft within the Jovian magnetosphere. Various types of high-frequency radio emissions resulting from resonant interactions have been identified in this region ...
Garima Yadav, B.S. Sharma, Ankita
doaj   +1 more source

Microinstabilities at perpendicular collisionless shocks: A comparison of full particle simulations with different ion to electron mass ratio

, 2012
A full particle simulation study is carried out for studying microinstabilities generated at the shock front of perpendicular collisionless shocks. The structure and dynamics of shock waves are determined by Alfven Mach number and plasma beta, while ...
Kidani, Yoshitaka, Matsukiyo, Shuichi, Umeda, Takayuki, Yamazaki, Ryo   +3 more
core   +1 more source

Spatiotemporal evolution of radio wave pump-induced ionospheric phenomena near the fourth electron gyroharmonic [PDF]

, 2007
On 12 November 2001, the European Incoherent Scatter (EISCAT) high-frequency (HF) radio wave transmitter facility, operating in O-mode at 5.423 MHz with 550 MW effective radiated power, produced artificial optical rings which appeared immediately at ...
Ashrafi, M., Isham, B., Kaila, K., Kosch, Mike J.   +3 more
core   +1 more source

Influence of the Eccentric Geomagnetic Dipole on Longitude Variations of Compressional Upstream Wave Amplitudes in the Topside Ionosphere: Results From the MSS‐1A Satellite

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Based on 2‐year magnetic data from the Macau science satellite, we investigate the compressional Pc3‐4 pulsations (between 16 and 100 mHz) driven by upstream waves (UWs). Our results confirm larger UWs amplitudes in the South Atlantic Anomaly (SAA) longitudes, agreeing with previous missions.
Chao Xiong, Haibin Liu, Hermann Lühr, Chunyu Xu   +3 more
wiley   +1 more source