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Skip to Search Results- 21Rankin, Robert
- 6Tikhonchuk, Vladimir T.
- 5Kabin, Konstantin
- 5Lu, J. Y.
- 5Marchand, Richard
- 4Tikhonchuk, V. T.
- 24Physics, Department of
- 24Physics, Department of/Journal Articles (Physics)
- 11Graduate and Postdoctoral Studies (GPS), Faculty of
- 11Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 2Biological Sciences, Department of
- 2Biological Sciences, Department of/Journal Articles (Biological Sciences)
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Spring 2011
In this thesis we examine the generation mechanisms of Pc 5 ULF waves during geomagnetic storms. Also, we study the interaction between Pc 5 ULF waves and energetic particles in the radiation belts and the observed energetic particle flux modulation by Pc 5 ULF waves is verified using particle...
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Spring 2012
Traditional analyses of Anabaptist action continue to be problematized by substantial theological, social, economic, ethical, and political disparities defining the early decades of sixteenth-century Anabaptist movements. This dissertation is offered as a “reconciliation,” as an attempt to...
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2007
Sperling, F. A. H., MacQuarrie, C. J. K., Langor, D. W.
Mitochondrial cytochrome oxidase I and 11 genes were sequenced for two invasive alien birch (Betula L. [Betulaceae]) leaf-mining sawflies, Profenusa thomsoni (Konow, 1886) (Hymenoptera: Tenthredinidae) and Scolioneura betuleti (King, 1816) (Hymenoptera: Tenthredinidae), accidentally introduced...
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Fall 2020
The development of accurate models of drift resonance between $H^+$ ions and Alfv\'enic ultra-low frequency (ULF) waves is crucial for understanding particle dynamics in the Earth's inner magnetosphere. However, full solutions to the wave equations are complex and approximations are required to...
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2003
Marchand, Richard, Lu, J. Y., Rankin, Robert, Tikhonchuk, Vladimir T.
Nonlinear dynamics of a dispersive field line resonance (FLR) is investigated in a dipolar magnetic geometry using a new finite element code TOPO. Time dependent dispersion and steepening of the perpendicular Alfvén velocity profile lead to the acceleration of dispersive effects and to...
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2008
Kabin, Konstantin, Rankin, Robert, Sydorenko, Dmytro
A two-dimensional nonlinear multi-fluid MHD model of the ionosperic Alfven resonator is presented. The resonator is excited by a packet of shear Alfven waves propagating downward toward the ionosphere from high altitudes. It is shown that the nonlinear (ponderomotive) force of standing...
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2005
Marchand, Richard, Lu, J. Y., Rankin, Robert, Tikhonchuk, Vladimir T.
Ionospheric electron heating by resonant standing shear Alfvén waves in Earth's magnetosphere is investigated. It is demonstrated that in field line resonances (FLRs), electron heating by Alfvén waves produces ionization and large changes in the ionospheric Pedersen conductivity. This leads to a...
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1994
Tikhonchuk, V. T., Frycz, P., Samson, J. C., Rankin, Robert
We present theory and numerical simulations of strong nonlinear effects in standing shear Alfven waves (SAWs) in the Earth's magnetosphere, which is modeled as a finite size box with straight magnetic lines and (partially) reflecting boundaries. In a low beta plasma it is shown that the...
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Numerical modeling of drift resonance and drift-bounce resonance between ultra-low frequency waves and energetic particles in the inner magnetosphere
DownloadFall 2018
The main topic of this thesis is the investigation of drift resonance and drift-bounce resonance between energetic particles and Pc3-5 Alfvenic ultra-low frequency (ULF) waves in the Earth's inner magnetosphere. We have developed numerical models to simulate how the dynamics of O+, H+ ions and...
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1998
Rankin, Robert, Tikhonchuk, V. T.
We describe nonlinear resonance absorption of compressional Alfven waves in a model magnetosphere. It is shown that the ponderomotive force of excited standing shear Alfven waves can lead to nonlinear saturation and spatial structuring of field line resonances and that in low-beta plasmas...