Results 11 to 20 of about 18,719 (213)

Differences in Ultra‐Low‐Frequency Waves Associated With Dipolarization in the Near‐Earth Magnetotail Between Substorms and Pseudosubstorms

open access: yesGeophysical Research Letters
We studied the characteristics of ultra‐low‐frequency (ULF) waves associated with dipolarization in the near‐Earth plasma sheet for substorms and pseudosubstorms, employing superposed epoch analysis of data from the Time History of Events and Macroscale ...
Kanpatom Kasonsuwan   +2 more
doaj   +2 more sources

Investigation of  ∼ 20–40 mHz ULF waves and their driving mechanisms in Mercury's dayside magnetosphere [PDF]

open access: yesAnnales Geophysicae, 2017
Ultra-low-frequency (ULF) waves in the  ∼  20–40 mHz range are frequently observed in the Mercury magnetosphere using Mercury Surface Space Environment Geochemistry, and Ranging (MESSENGER) magnetic field data.
E. Liljeblad, T. Karlsson
doaj   +1 more source

Energetic Electron and Proton Interactions with Pc5 Ultra Low Frequency (ULF) Waves during the Great Geomagnetic Storm of 15–16 July 2000

open access: yesJournal of Astronomy and Space Sciences, 2022
The dynamics of the outer zone radiation belt has received a lot of attention mainly due to the correlation between the occurrence of enhancing relativistic electron flux and spacecraft operation anomalies or even failures (e.g., Baker et al.
Eunah Lee, Ian R. Mann, Louis G. Ozeke
doaj   +1 more source

INTERACTION BETWEEN LONG-PERIOD ULF WAVES AND CHARGED PARTICLES IN THE MAGNETOSPHERE: THEORY AND OBSERVATIONS (OVERVIEW)

open access: yesSolar-Terrestrial Physics, 2021
The paper reviews the current state of the problem of interaction between long-period ultra-low-frequency (ULF) waves and high-energy particles. We consider elements of the theory of energy exchange between waves and particles, particle transport across ...
D.Yu. Klimushkin   +3 more
doaj   +1 more source

Overtaking interactions of nonlinear ultra-low frequency multi-shock structures in non-relativistic and ultra-relativistic degenerate plasmas

open access: yesJournal of Taibah University for Science, 2022
A Burgers’ equation (BE) is obtained to examine the overtaking interactions of nonlinear ultra-low frequency (ULF) shock waves, in two cases, in non-relativistic and ultra-relativistic degenerate plasmas consisting of inertial mobile heavy-ion fluid and ...
E. F. El-Shamy   +5 more
doaj   +1 more source

ULF waves and discrete aurora [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2012
We present results from the numerical study of ULF waves generated by the ionospheric feedback instability in density cavities. The goal of the study is to explain several spectral features of ULF waves detected on the ground in close vicinity of intense discrete auroral arcs.
A. V. Streltsov   +4 more
openaire   +1 more source

Polarization properties of standing shear Alfvén waves in non-axisymmetric background magnetic fields [PDF]

open access: yesAnnales Geophysicae, 2007
In this paper we present results concerning periods and polarizations of cold plasma ultra-low frequency (ULF) guided Alfvén waves in a non-axisymmetric geomagnetic field.
K. Kabin   +4 more
doaj   +1 more source

Determining ULF Wave Contributions to Geomagnetically Induced Currents: The Important Role of Sampling Rate

open access: yesSpace Weather, 2023
Past studies found that large‐amplitude geomagnetically induced current (GIC) related to magnetospheric Ultra Low Frequency (ULF) waves tend to be associated with periods >120 s at magnetic latitudes >60°, with comparatively (a) smaller GIC amplitudes at
Michael D. Hartinger   +11 more
doaj   +1 more source

Interactions of energetic electrons with ULF waves triggered by interplanetary shock: Van Allen Probes observations in the magnetotail [PDF]

open access: yes, 2014
We present in situ observations of a shock-induced substorm-like event on 13 April 2013 observed by the newly launched Van Allen twin probes. Substorm-like electron injections with energy of 30-500 keV were observed in the region from L∼5.2 to 5.5 ...
Blake, J. B.   +11 more
core   +2 more sources

A case study of large-amplitude ULF waves in the Martian foreshock

open access: yesEarth and Planetary Physics, 2020
Foreshock ultralow frequency (ULF) waves constitute a significant physical phenomenon in the plasma environment of terrestrial planets. The occurrence of these waves, associated with backstreaming particles reflected and accelerated at the bow shock ...
LiCan Shan, YaSong Ge, AiMin Du
doaj   +1 more source

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