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Coherent Interactions between Whistler Mode Waves and Energetic Electrons in the Earth's Radiation Belts.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Coherent Interactions between Whistler Mode Waves and Energetic Electrons in the Earth's Radiation Belts./
作者:	Hosseini, Poorya.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	158 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-03, Section: B.
Contained By:	Dissertations Abstracts International83-03B.
標題:	Electromagnetics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28319914
ISBN:	9798538135769

Coherent Interactions between Whistler Mode Waves and Energetic Electrons in the Earth's Radiation Belts.
Hosseini, Poorya.

Coherent Interactions between Whistler Mode Waves and Energetic Electrons in the Earth's Radiation Belts. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 158 p.

Source: Dissertations Abstracts International, Volume: 83-03, Section: B.

Thesis (Ph.D.)--University of Colorado at Denver, 2021.

This item must not be sold to any third party vendors.

Energetic particles trapped in the Earth's magnetic field make up the radiation belts, also called the Van Allen belts. These particle fluxes are a major consequence of space weather events and can be damaging to spacecraft hardware and disrupt communication systems. Very Low Frequency (~1-30 kHz) electromagnetic whistler mode waves have been long known to be a key driver of the removal and acceleration of these trapped particles within the magnetosphere. Whistler mode waves in the Earth's magnetosphere have been studied for many decades but key parameters are still not fully understood and new observations often challenge long held assumptions. Interaction between VLF whistler waves and energetic electrons (with energies ranging from 1 keV to several MeV) in the near-Earth space region are investigated using ground observations and numerical simulations.Analysis of unique ground observations shows evidence for the evolution of a magnetospheric whistler mode wave source from hiss generation to chorus generation. Observations of lightning whistler triggered emissions are used to estimate temperature anisotropy for the magnetospheric hot plasma distribution and identify favorable conditions for spontaneous generation of lower band chorus facilitated through linear growth and the proclivity of upper band chorus to be generated through external triggering. A backward test particle model is employed to address the effect of coherent parallel propagating whistler mode waves on the magnetospheric electron distribution. The model reveals the presence of a stable phase-space trap with higher resolution than previously attempted computer simulations. A 2-dimentional full-wave FDTD solver is developed to address whistler mode wave propagation in small-scale density irregularities. Comparison with spacecraft observations suggests that small scale cold plasma irregularities strongly affect whistler mode wave characteristics in the equatorial region.

ISBN: 9798538135769Subjects--Topical Terms:

3173223
Electromagnetics.
Subjects--Index Terms:

Active experiments

Coherent Interactions between Whistler Mode Waves and Energetic Electrons in the Earth's Radiation Belts.
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500 $a Source: Dissertations Abstracts International, Volume: 83-03, Section: B.
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520 $a Energetic particles trapped in the Earth's magnetic field make up the radiation belts, also called the Van Allen belts. These particle fluxes are a major consequence of space weather events and can be damaging to spacecraft hardware and disrupt communication systems. Very Low Frequency (~1-30 kHz) electromagnetic whistler mode waves have been long known to be a key driver of the removal and acceleration of these trapped particles within the magnetosphere. Whistler mode waves in the Earth's magnetosphere have been studied for many decades but key parameters are still not fully understood and new observations often challenge long held assumptions. Interaction between VLF whistler waves and energetic electrons (with energies ranging from 1 keV to several MeV) in the near-Earth space region are investigated using ground observations and numerical simulations.Analysis of unique ground observations shows evidence for the evolution of a magnetospheric whistler mode wave source from hiss generation to chorus generation. Observations of lightning whistler triggered emissions are used to estimate temperature anisotropy for the magnetospheric hot plasma distribution and identify favorable conditions for spontaneous generation of lower band chorus facilitated through linear growth and the proclivity of upper band chorus to be generated through external triggering. A backward test particle model is employed to address the effect of coherent parallel propagating whistler mode waves on the magnetospheric electron distribution. The model reveals the presence of a stable phase-space trap with higher resolution than previously attempted computer simulations. A 2-dimentional full-wave FDTD solver is developed to address whistler mode wave propagation in small-scale density irregularities. Comparison with spacecraft observations suggests that small scale cold plasma irregularities strongly affect whistler mode wave characteristics in the equatorial region.
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653 $a Signal processing
653 $a Waves in Plasma
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