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dc.contributor.advisorGustavsson, Björn
dc.contributor.authorGavazzi, Etienne
dc.date.accessioned2022-08-01T13:14:40Z
dc.date.available2022-08-01T13:14:40Z
dc.date.issued2022-05-15
dc.description.abstractElectric potential-differences between the magnetospheric and the ionospheric end of a magnetic flux tube lead to the downward acceleration of electrons in the ionosphere, producing visible auroral arcs. Most of the potential-drop is situated in a narrow altitude-region known as double layer. In the ionosphere, the precipitation of high-energy electrons will produce secondary electrons. Some of the primary and secondary electrons will escape out of the ionosphere back up along the magnetic flux tube. In this work, we study the dynamic effects from the onset of upward-streaming electrons from the ionosphere on a double layer potential structure situated in the acceleration region. We find that the onset of the upward-streaming electrons is the source of perturbations in the electric field between the double layer and the ionosphere. The perturbations do not seem to affect the structure of the double layer, but have an effect on the precipitation of electrons.en_US
dc.identifier.urihttps://hdl.handle.net/10037/25897
dc.language.isoengen_US
dc.publisherUiT Norges arktiske universiteten_US
dc.publisherUiT The Arctic University of Norwayen_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-sa/4.0en_US
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)en_US
dc.subject.courseIDFYS-3900
dc.subjectVDP::Mathematics and natural science: 400::Physics: 430::Space and plasma physics: 437en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437en_US
dc.subjectVDP::Mathematics and natural science: 400::Physics: 430::Astrophysics, astronomy: 438en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Astrofysikk, astronomi: 438en_US
dc.titleThe effects of time-variation of electron fluxes from the auroral ionosphere on M-I couplingen_US
dc.typeMaster thesisen_US
dc.typeMastergradsoppgaveen_US


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Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)