Results 51 to 60 of about 1,668 (135)

Statistical analysis of ground based magnetic field measurements with the field line resonance detector [PDF]

Annales Geophysicae, 2008
In this paper we introduce the field line resonance detector (FLRD), a wave telescope technique which has been specially adapted to estimate the spectral energy density of field line resonance (FLR) phase structures in a superposed wave field.
F. Plaschke, K.-H. Glassmeier, O. D. Constantinescu, I. R. Mann, D. K. Milling, U. Motschmann, I. J. Rae   +6 more
doaj   +1 more source

Nonlinear Evolution of Auroral Fine Structures Through the Feedback Instability in a Dipole Field Configuration

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Nonlinear simulations of the feedback instability in the Alfvénic magnetosphere‐ionosphere (M‐I) coupling system have been carried out by means of the reduced magnetohydrodynamic (MHD) equations with spatially non‐uniform kinematic viscosity and resistivity, coupled with two‐fluid equations, in order to investigate auroral fine‐structure ...
T. Sakaki, T.‐H. Watanabe
wiley   +1 more source

Relativistic electron flux growth during storm and non-storm periods as observed by ARASE and GOES satellites

Earth, Planets and Space, 2023
Variations of relativistic electron fluxes (E ≥ 1 MeV) and wave activity in the Earth magnetosphere are studied to determine the contribution of different acceleration mechanisms of the outer radiation belt electrons: ULF mechanism, VLF mechanism, and ...
Vladimir Borisovich Belakhovsky, Vyacheslav A. Pilipenko, Elizaveta E. Antonova, Yoshizumi Miyoshi, Yoshiya Kasahara, Satoshi Kasahara, Nana Higashio, Iku Shinohara, Tomoaki Hori, Shoya Matsuda, Shoichiro Yokota, Takeshi Takashima, Mitani Takefumi, Kunihiro Keika, Satoko Nakamura   +14 more
doaj   +1 more source

Tone‐Evoked Sleep Electroencephalographic Slow Oscillations as a Function of Peripheral Rhythms: New Insights Into the Brain–Heart Integration

Journal of Sleep Research, Volume 35, Issue 3, June 2026.
ABSTRACT Recent studies have shown that acoustic stimulation, a common neuromodulation technique, can enhance slow‐wave activity (SWA), which is associated with immune, autonomic nervous system activity and cognitive health benefits. Despite some disagreement, many studies suggest that maximising tone‐evoked SWA depends on the timing of the acoustic ...
Mohamad Forouzanfar, Sepehr Sardooeinasab, Fiona C. Baker, Ian M. Colrain, Massimiliano de Zambotti   +4 more
wiley   +1 more source

High spatial and temporal resolution observations of an impulse-driven field line resonance in radar backscatter artificially generated with the Tromsø heater [PDF]

Annales Geophysicae, 1997
The CUTLASS Finland HF radar has been operated in conjunction with the EISCAT Tromsø RF ionospheric heater facility to examine a ULF wave characteristic of the development of a field line resonance (FLR) driven by a cavity mode caused by a ...
T. K. Yeoman, D. M. Wright, T. R. Robinson, J. A. Davies, M. Rietveld   +4 more
doaj   +1 more source

Superposition of Doppler‐Shifting Magnetopause Kelvin‐Helmholtz Modes Through Dynamic Mode Decomposition of a Global MHD Simulation

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The Kelvin‐Helmholtz instability (KHI) mediates the viscous‐like solar‐terrestrial interaction by generating magnetopause surface waves that quickly become non‐linear. Basic theory predicts the locally most‐unstable linear wave dominates.
H. M. Kelly, M. O. Archer, J. P. Eastwood, M. Heyns, J. W. B. Eggington, J. P. Chittenden   +5 more
wiley   +1 more source

Modulation of suprathermal electron fluxes by ultra-low-frequency magnetic field fluctuations in the Martian foreshock

Earth and Planetary Physics
Ultra-low-frequency (ULF) waves are ubiquitous in terrestrial and planetary environments, playing a crucial role in energy transfer and dissipation through wave–particle interactions within space plasmas.
TaiFeng Jin, BinBin Ni, Song Fu, XiaoTong Yun, ShuYue Pang, MinYi Long, QiongYue Zhang, Nan Wang, XinJie Xiong, YiBin Zhao, FangFei Shi   +10 more
doaj   +1 more source

Large‐Scale Magnetosheath Jets Formed by Shock‐Discontinuity Interactions: A Three‐Dimensional Global Hybrid Simulation

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Magnetosheath high‐speed jets with enhanced dynamic pressure are common in Earth's magnetosheath and can impinge on the magnetopause, driving pronounced boundary deformation. Recent observations indicate that shock–discontinuity interactions (SDIs) can generate magnetosheath jets, but the formation mechanism is still unclear.
Jin Guo, San Lu, Quanming Lu, Yufei Zhou, Boyi Wang, Tianran Sun, Yihong Guo, Zhongwei Yang, Shimou Wang, Junyi Ren, Jiuqi Ma, Chao Shen, Xinliang Gao, Rongsheng Wang   +13 more
wiley   +1 more source

Three-step Acceleration of the Radiation Belt Relativistic Electrons by Interplanetary Shocks

The Astrophysical Journal Supplement Series
Inward radial diffusion driven by ultra-low-frequency (ULF) waves is one of the dominant acceleration mechanisms of relativistic (>1.0 MeV) electrons in the Earth’s outer radiation belt.
Chaoling Tang, Xinxin Chu, Zhenpeng Su, Jingrun Chen   +3 more
doaj   +1 more source

“Caterpillar” ULF Waves in the Dusk Side Sub‐Auroral Region: Conjugate Observations With SuperDARN, Arase and Ground Magnetometers

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract On 23 November 2022, during exceptionally quiet geomagnetic conditions, a distinct ultra‐low frequency (ULF) wave in the Pc5 band (∼2.4 mHz) was observed in the duskside sub‐auroral region by two Canadian SuperDARN (Super Dual Auroral Radar Network) radars.
N. Nishitani, K. Hosokawa, T. Hori, M. Teramoto, P. V. Ponomarenko, A. Shinbori, Y. Obana, A. S. Yukimatu, G. Hussey, Y. Miyoshi, A. Matsuoka, A. Kumamoto, F. Tsuchiya, S. Matsuda, Y. Kasahara, S. Nakamura, I. Shinohara, Y. Zhang, L. Paxton   +18 more
wiley   +1 more source