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Electron Heat Fluxes Generated by Intense Whistler Waves at the Upper Ionospheric Altitudes

Khazanov, George V ; Ma, Qianli ; Chu, Mike

Journal of geophysical research. Space physics, 2022-09, Vol.127 (9), p.n/a [Periódico revisado por pares]

Goddard Space Flight Center: American Geophysical Union

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Título:
Electron Heat Fluxes Generated by Intense Whistler Waves at the Upper Ionospheric Altitudes
Autor: Khazanov, George V ; Ma, Qianli ; Chu, Mike
Assuntos: Altitude ; Atmospheric ionization ; Chorus waves ; Conjugates ; Electron density ; Electron energy ; electron heat fluxes ; Electron plasma ; Electron precipitation ; Electron transport ; Energy ; Energy balance ; Fluctuations ; Geophysics ; Heat ; Heat flux ; Heat transfer ; Heating ; Hemispheres ; High energy electrons ; Hiss ; Ionization ; Ionosphere ; Magnetospheres ; magnetosphere‐ionosphere coupling ; Magnetospheric electrons ; magnetospheric whistler waves as an implicit source of cold electron heating ; Particle interactions ; Space weather ; Weather ; Whistler waves ; Whistlers
É parte de: Journal of geophysical research. Space physics, 2022-09, Vol.127 (9), p.n/a
Notas: GSFC
Goddard Space Flight Center
Descrição: Magnetospheric whistler waves, chorus and hiss, can't provide the resonance heating of the core electron plasma population. However, these whistler-mode branches, can implicitly participate in the heating processes of the core plasma thermal electron population by triggering the electron precipitation over a broad energy range from the magnetosphere and subsequent atmospheric ionization processes leading to the production of superthermal electron population. These superthermal electrons play a large role in the magnetosphere-ionosphere-atmosphere energy interplay with participation of both magnetically conjugate hemispheres, and their Coulomb interaction with background magnetospheric thermal electrons. Using strong hiss and chorus wave events measured by the Van Allen Probes and SuperThermal Electron Transport code, we evaluate the formation of electron heat fluxes at the upper ionospheric altitudes and discuss their consequences on the formation of electron temperature. It is found that chorus and hiss waves that initiate the precipitation of magnetospheric electrons with energies below 30 keV and the follow-up production of secondary electrons play an important role in the energy balance of ionosphere-magnetosphere system.
Editor: Goddard Space Flight Center: American Geophysical Union
Idioma: Inglês

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Electron Heat Fluxes Generated by Intense Whistler Waves at the Upper Ionospheric Altitudes

Khazanov, George V ; Ma, Qianli ; Chu, Mike

Goddard Space Flight Center: American Geophysical Union

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