Results 61 to 70 of about 13,240 (212)

Multi-spacecraft determination of wave characteristics near the proton gyrofrequency in high-altitude cusp [PDF]

Annales Geophysicae, 2005
We present a detailed study of waves with frequencies near the proton gyrofrequency in the high-altitude cusp for northward IMF as observed by the Cluster spacecraft. Waves in this regime can be important for energization of ions and electrons and for
D. Sundkvist, D. Sundkvist, D. Sundkvist, A. Vaivads, M. André, J.-E. Wahlund, Y. Hobara, S. Joko, V. V. Krasnoselskikh, Y. V. Bogdanova, S. C. Buchert, N. Cornilleau-Wehrlin, A. Fazakerley, J.-O. Hall, H. Rème, G. Stenberg   +15 more
doaj   +1 more source

Nonresonant interactions of electromagnetic ion cyclotron waves with relativistic electrons [PDF]

Journal of Geophysical Research: Space Physics, 2016
AbstractThe dynamics of relativistic electrons traveling through a parallel‐propagating, monochromatic electromagnetic ion cyclotron (EMIC) wave in the Earth's dipole field are investigated via test particle simulations. Both resonant and nonresonant responses in electron pitch angle are considered, and the differences between the two are highlighted ...
Lunjin Chen, Richard M. Thorne, Jacob Bortnik, Xiao‐Jia Zhang   +3 more
openaire   +1 more source

Wave‐Based Quantification of Ion Composition in the Earth's Magnetosphere‐Ionosphere‐Coupling Region

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Ion composition critically determines the basic kinetic characteristics of plasma and affects energy transmission of the magnetosphere. However, it exhibits significant variations with altitude, latitude, local time, longitude, and also with geomagnetic and solar activity.
Zhijie Qin, Hui Zhu, Zhihai Ouyang, Huicong Chen, Zhenghao She   +4 more
wiley   +1 more source

Topological Photonic Devices and Circuits at Terahertz Frequencies

Laser &Photonics Reviews, Volume 20, Issue 7, 6 April 2026.
This review examines how 3D topological insulators and emerging topological photonic phases enable robust, low‐loss and defect‐immune terahertz devices. Fundamental properties, device implementations and topological transport mechanisms are surveyed, revealing new opportunities for reconfigurable, high‐performance THz components and scalable ...
Samane Kalhor, Srabani Kar, Ranjan Singh, Kaveh Delfanazari   +3 more
wiley   +1 more source

Extended Cyclotron Resonant Heating of the Turbulent Solar Wind

The Astrophysical Journal Letters
Circularly polarized, nearly parallel propagating waves are prevalent in the solar wind at ion-kinetic scales. At these scales, the spectrum of turbulent fluctuations in the solar wind steepens, often called the transition range, before flattening at sub-
Trevor A. Bowen, Ivan Y. Vasko, Stuart D. Bale, Benjamin D. G. Chandran, Alexandros Chasapis, Thierry Dudok de Wit, Alfred Mallet, Michael McManus, Romain Meyrand, Marc Pulupa, Jonathan Squire   +10 more
doaj   +1 more source

Magnetic Tilt Effect on Externally Driven Electromagnetic Ion Cyclotron (EMIC) Waves

Geophysical Research Letters, 2023
We examine coupling of fluctuations in the solar wind with electromagnetic ion cyclotron (EMIC) waves in the magnetosphere using an advanced full‐wave simulation code, Petra‐M. Dipole tilt dramatically affects the coupling process. While very little wave
Eun‐Hwa Kim, Jay R. Johnson
doaj   +1 more source

DNA waves and water [PDF]

, 2010
Some bacterial and viral DNA sequences have been found to induce low frequency electromagnetic waves in high aqueous dilutions. This phenomenon appears to be triggered by the ambient electromagnetic background of very low frequency.
A Tedeschi, C Lavallee, Del Giudice E, Del Giudice E, E Del Giudice, G Vitiello, J Aissa, L Montagnier, Landau LD, Montagnier L, Nickolaenko A P, Szent-Gyorgyi A, Voeikov VL   +12 more
core   +1 more source

Plasma Dynamics and Structure of Titan's Induced Magnetosphere From Wave, Magnetic Field, and Plasma Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract In this study, we combine Cassini fields and particle observations to investigate Titan's induced magnetosphere from the TA to T82 flybys, including flybys from the Cassini prime, equinox, and part of the solstice mission, to investigate the average location and the shape of Titan's induced magnetosphere. Although earlier studies have provided
K. Kim, R. Modolo, N. J. T. Edberg, M. Morooka, N. Romanelli, C. Moissard, M. K. G. Holmberg, C. Bertucci, J.‐J. Berthelier, P. Canu, R. Piberne, A. J. Coates, E. Dubinin, L. Regoli, W. S. Kurth, J.‐E. Wahlund, J. H. Waite, M. K. Dougherty   +17 more
wiley   +1 more source

Parker Solar Probe Observations of Proton Core‐Beam Distributions in Heliospheric Current Sheet Region: Quasilinear Instability Analysis Combined With Collisional Relaxation

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Parker Solar Probe has been proven as instrumental for the observation of young solar wind. During the encounters E‐07 and E‐08, PSP recorded the core plus beaming protons crossing the heliospheric current Sheet region. When the observed PSP data is plotted in the temperature ratio versus parallel beta space, it is found that the occurrence ...
M. Rashid, P. H. Yoon, J. Huang, C. Salem, M. Sarfraz, S. Alnussirat, R. A. López, J. Seough, H. Xie, D. Larson, R. Livi   +10 more
wiley   +1 more source

The Contribution of Time Domain Structures to Electron Loss During the 17 March 2013 Geomagnetic Storm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Ring current modeling has been a subject of active research in the last two decades. However, accurately modeling of this population of particles remains a challenge. Several recent studies have demonstrated that ring current models can overestimate the trapped electron flux in the 10–50 keV range by up to two orders of magnitude during ...
Katja Stoll, Yangyang Shen, Bernhard Haas, Leonie Pick, Dedong Wang, Yuri Shprits   +5 more
wiley   +1 more source