Search Results - "Lysak, R. L."
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Poynting Fluxes, Field‐Aligned Current Densities, and the Efficiency of the Io‐Jupiter Electrodynamic Interaction
Published in Geophysical research letters (28-05-2023)“…Juno's highly inclined orbits provide opportunities to sample high‐latitude magnetic field lines connected to the orbit of Io, among the other Galilean…”
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Io's Near‐Field Alfvén Wings and Local Electron Beams Inferred From Juno/Waves
Published in Geophysical research letters (16-08-2024)“…Juno conducted two close Io flybys on 30 December 2023 and 03 February 2024, both at a minimum altitude of 1,500 km. Filamentary structures in the electric and…”
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3
Diagnosing the Role of Alfvén Waves in Magnetosphere‐Ionosphere Coupling: Swarm Observations of Large Amplitude Nonstationary Magnetic Perturbations During an Interval of Northward IMF
Published in Journal of geophysical research. Space physics (01-01-2018)“…High‐resolution multispacecraft Swarm data are used to examine magnetosphere‐ionosphere coupling during a period of northward interplanetary magnetic field…”
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Alfvénic Dynamics and Fine Structuring of Discrete Auroral Arcs: Swarm and e‐POP Observations
Published in Geophysical research letters (28-01-2018)“…The electrodynamics associated with dual discrete arc aurora with antiparallel flow along the arcs were observed nearly simultaneously by the enhanced Polar…”
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Propagation of Pi2 pulsations in a dipole model of the magnetosphere
Published in Journal of geophysical research. Space physics (01-01-2015)“…Localized fast flows that impinge on the inner magnetosphere from the plasma sheet are observed to oscillate on time scales of minutes. The compression ahead…”
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Propagation of kinetic Alfvén waves in the ionospheric Alfvén resonator in the presence of density cavities
Published in Geophysical research letters (01-10-2008)“…Recent observations of particle distributions that are narrow in pitch angle and broad in energy have suggested that kinetic Alfvén waves are a significant…”
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Ultra-low frequency wave coupling in the ionospheric Alfvén resonator: Characteristics and implications for the interpretation of ground magnetic fields
Published in Journal of Geophysical Research: Space Physics (01-03-2012)“…In cold magnetospheric plasmas, ultra‐low frequency (ULF) waves occur in either the Alfvén or magnetosonic mode. Owing to the strong inhomogeneity of the…”
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Magnetosphere-ionosphere coupling by Alfvén waves at midlatitudes
Published in Journal of Geophysical Research - Space Physics (01-07-2004)“…Numerical modeling of magnetosphere‐ionosphere coupling by Alfvén waves has proven to be a valuable tool in describing the propagation and evolution of…”
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Polar spacecraft based comparisons of intense electric fields and Poynting flux near and within the plasma sheet-tail lobe boundary to UVI images: An energy source for the aurora
Published in Journal of Geophysical Research (01-08-2000)“…In this paper, we present measurements from two passes of the Polar spacecraft of intense electric and magnetic field structures associated with Alfven waves…”
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Field Line Resonances in Jupiter's Magnetosphere
Published in Geophysical research letters (28-09-2020)“…The arrival of the Juno satellite at Jupiter has led to an increased interest in the dynamics of the Jovian magnetosphere. Jupiter's auroral emissions often…”
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Propagation of Alfvén waves in the magnetotail during substorms
Published in Annales geophysicae (1988) (18-05-2009)“…Recent observations from the THEMIS mission have focused attention on the timing of events in the magnetotail during magnetospheric substorms and other periods…”
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On the coupling of fast and shear Alfvén wave modes by the ionospheric Hall conductance
Published in Earth, planets, and space (01-01-2013)“…There are two low frequency, magnetised, cold plasma wave modes that propagate through the Earth’s magnetosphere. These are the compressional (fast) and the…”
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Kinetic Alfvén waves and auroral particle acceleration: a review
Published in Reviews of modern plasma physics (01-01-2023)“…Shear mode Alfvén waves are the carriers of field-aligned currents in the auroral zones of Earth and other planets. These waves travel along the magnetic field…”
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A Numerical Model for the Interaction of Io‐Generated Alfvén Waves With Jupiter's Magnetosphere and Ionosphere
Published in Journal of geophysical research. Space physics (01-04-2023)“…The interaction of Io with the corotating magnetosphere of Jupiter is known to produce Alfvén wings that couple the moon to Jupiter's ionosphere. We present…”
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Io-Jupiter interaction: Alfvén wave propagation and ionospheric Alfvén resonator
Published in Journal of Geophysical Research - Space Physics (01-06-2006)“…A linear, one‐dimensional gyrofluid code has been used to determine the characteristics of propagating Alfvén waves and the ionospheric Alfvén resonator on a…”
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Statistical study of substorm timing sequence
Published in Journal of Geophysical Research. B. Solid Earth (01-12-2009)“…Observations of timing sequences of substorms expected in various onset mechanisms are examined by using a space‐time diagram, which correlates observed space…”
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S bursts and the Jupiter ionospheric Alfvén resonator
Published in Journal of Geophysical Research - Space Physics (01-06-2006)“…This article explores a possible relationship between S bursts and trapped Alfvén waves in Jupiter's upper ionosphere. Eigenmodes of inertial Alfvén waves in…”
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The Jovian Ionospheric Alfvén Resonator and Auroral Particle Acceleration
Published in Journal of geophysical research. Space physics (01-12-2021)“…The ionospheric Alfvén resonator (IAR) is a structure formed by the rapid decrease in the plasma density above a planetary ionosphere. This results in a…”
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A mechanism of the auroral substorm expansion onset: electric discharge in the double layer
Published in Frontiers in astronomy and space sciences (15-11-2023)“…Magnetospheric substorms often occur when a significant amount of energy from the solar wind is deposited and stored in the magnetotail during the growth phase…”
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Numerical Investigations of Interhemispheric Asymmetry due to Ionospheric Conductance
Published in Journal of geophysical research. Space physics (01-07-2020)“…Due to differences in solar illumination, a geomagnetic field line may have one foot point in a dark ionosphere while the other ionosphere is in daylight. This…”
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