Search Results - "Chaston, C"

Electron Scattering, Transport and Energization by Alfvénic Turbulence in Earth's Outer Radiation Belt by Chaston, C. C.

“…The transport of energetic electrons immersed in Alfvénic turbulence in Earth's outer radiation belt is explored. It is shown how electrons subject to the…”
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Energy transport by kinetic-scale electromagnetic waves in fast plasma sheet flows by Chaston, C. C., Bonnell, J. W., Clausen, L., Angelopoulos, V.

“…We report observations from the THEMIS spacecraft characterizing the nature and importance of low frequency electromagnetic fluctuations on kinetic scales…”
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Electron Power-Law Spectra in Solar and Space Plasmas by Oka, M., Birn, J., Battaglia, M., Chaston, C. C., Hatch, S. M., Livadiotis, G., Imada, S., Miyoshi, Y., Kuhar, M., Effenberger, F., Eriksson, E., Khotyaintsev, Y. V., Retinò, A.

“…Particles are accelerated to very high, non-thermal energies in solar and space plasma environments. While energy spectra of accelerated electrons often…”
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Magnetic reconnection in the auroral acceleration region by Chaston, C. C.

“…Evidence is presented for the operation of extreme guide field magnetic reconnection in the presence of sheared flows in a narrow current sheet through the…”
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Ion gyroradius effects on particle trapping in kinetic Alfvén waves along auroral field lines by Damiano, P. A., Johnson, J. R., Chaston, C. C.

“…In this study, a 2‐D self‐consistent hybrid gyrofluid‐kinetic electron model is used to investigate Alfvén wave propagation along dipolar magnetic field lines…”
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Ion temperature effects on magnetotail Alfvén wave propagation and electron energization by Damiano, P. A., Johnson, J. R., Chaston, C. C.

“…A new 2‐D self‐consistent hybrid gyrofluid‐kinetic electron model in dipolar coordinates is presented and used to simulate dispersive‐scale Alfvén wave pulse…”
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Pioneer Venus Orbiter Observations of Solar Wind Driven Magnetosonic Waves Interacting With the Dayside Venusian Ionosphere by Fowler, C. M., Ledvina, S., Chaston, C. C., Persson, M., Ramstad, R., Luhmann, J.

“…We use in situ plasma observations made by the Pioneer Venus Orbiter spacecraft to show for the first time that magnetosonic waves can couple the solar wind to…”
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Correlations Between Dispersive Alfvén Wave Activity, Electron Energization, and Ion Outflow in the Inner Magnetosphere by Hull, A. J., Chaston, C. C., Bonnell, J. W., Damiano, P. A., Wygant, J. R., Reeves, G. D.

“…Using measurements from the Van Allen Probes, we show that field‐aligned fluxes of electrons energized by dispersive Alfvén waves (DAWs) are prominent in the…”
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Dispersive Alfvén Wave Control of O+ Ion Outflow and Energy Densities in the Inner Magnetosphere by Hull, A. J., Chaston, C. C., Bonnell, J. W., Wygant, J. R., Kletzing, C. A., Reeves, G. D., Gerrard, A.

“…The relationship between dispersive Alfvén waves (DAWs), magnetospheric activity, and O+ ion outflow/energy density is examined using measurements from the Van…”
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An Auroral Alfvén Wave Cascade by Chaston, C. C.

“…Folding, kinking, curling and vortical optical forms are distinctive features of most bright auroral displays. These forms are symptomatic of non-linear…”
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Megavolt parallel potentials arising from double-layer streams in the Earth's outer radiation belt by Mozer, F S, Bale, S D, Bonnell, J W, Chaston, C C, Roth, I, Wygant, J

“…Huge numbers of double layers carrying electric fields parallel to the local magnetic field line have been observed on the Van Allen probes in connection with…”
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Turbulent Wavefield Morphology and Ion Scattering in the Magnetosheath by Chaston, C. C., Travnicek, P., Russell, C. T.

“…We analyze multipoint measurements in magnetosheath plasmas, just upstream of the Earth's magnetopause, to investigate the morphology of the turbulent fields…”
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Alfvén wave‐driven ionospheric mass outflow and electron precipitation during storms by Hatch, S. M., Chaston, C. C., LaBelle, J.

“…We explore the global Alfvénic response of the transition region between the topside ionosphere and magnetosphere to geomagnetic storms. From superposed epoch…”
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Ion heating by broadband electromagnetic waves in the magnetosheath and across the magnetopause by Chaston, C. C., Yao, Y., Lin, N., Salem, C., Ueno, G.

“…We present statistical observations demonstrating the action of broadband electromagnetic waves or structures in heating magnetosheath ions in the Earth's…”
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Small-scale auroral current sheet structuring by Chaston, C. C., Seki, K.

“…We simulate the 3‐D evolution of a thin current sheet as it impinges on the ionosphere from a magnetospheric source in a manner analogous to that which may…”
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Multiscale whistler waves within Earth's perpendicular bow shock by Hull, A. J., Muschietti, L., Oka, M., Larson, D. E., Mozer, F. S., Chaston, C. C., Bonnell, J. W., Hospodarsky, G. B.

“…We present observations of intense whistler waves made by Polar in the frequency range from a few Hz to 600 Hz within Earth's nearly perpendicular bow shock…”
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Extreme ionospheric ion energization and electron heating in Alfvén waves in the storm time inner magnetosphere by Chaston, C. C., Bonnell, J. W., Wygant, J. R., Kletzing, C. A., Reeves, G. D., Gerrard, A., Lanzerotti, L., Smith, C. W.

“…We report measurements of energized outflowing/bouncing ionospheric ions and heated electrons in the inner magnetosphere during a geomagnetic storm. The ions…”
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Filamentary Currents and Alfvénic Vortices in the Inner Magnetosphere by Chaston, C. C., Bonnell, J. W., Wygant, J. R., Reeves, G. D., Baker, D. N.

“…We show that broadband low‐frequency Alfvénic field variations observed in the inner‐magnetosphere from the Van Allen Probes during geomagnetically disturbed…”
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How important are dispersive Alfvén waves for auroral particle acceleration? by Chaston, C. C., Carlson, C. W., McFadden, J. P., Ergun, R. E., Strangeway, R. J.

“…The means by which charged particles are accelerated in space to form the aurora is still not fully understood. This acceleration produces earthward streaming…”
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Driving ionospheric outflows and magnetospheric O+ energy density with Alfvén waves by Chaston, C. C., Bonnell, J. W., Reeves, G. D., Skoug, R. M.

“…We show how dispersive Alfvén waves observed in the inner magnetosphere during geomagnetic storms can extract O+ ions from the topside ionosphere and…”
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