Vlasiator – From local to global magnetospheric hybrid-Vlasov simulations

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dc.contributor.author Pfau-Kempf, Yann
dc.date.accessioned 2017-02-22T12:43:08Z
dc.date.available 2017-02-22T12:43:08Z
dc.date.issued 2016-12
dc.identifier.isbn 978-952-336-001-3
dc.identifier.issn 0782-6117
dc.identifier.uri http://hdl.handle.net/10138/175914
dc.description.abstract The Sun is the source of the solar wind, a continuous stream of electrically charged particles and magnetic fields pervading the Solar system. Its interaction with the magnetic field of the Earth, in and around the region called the magnetosphere, controls the flow of matter and energy in near-Earth space. A fundamental understanding of the physical processes at play is crucial for the building of forecasting and warning systems, as the influence of the solar wind during space storms can harm life and technology in space and on the ground. These effects, collectively known as space weather, are one of the biggest albeit least understood natural threats to society. The research effort needed includes the development of observational methods as well as theories and models, to first describe and later predict the mechanisms and consequences of space weather. This doctoral thesis, comprising an introduction and four peer-reviewed articles, presents the hybrid-Vlasov model Vlasiator developed at the Finnish Meteorological Institute. Based on a detailed description of proton physics in space plasmas, Vlasiator allows to simulate both local contexts and the Earth’s magnetosphere on global scales. This unprecedented capability is only accessible by harnessing the power of modern supercomputers. The aim of this work is threefold. The current version of Vlasiator is documented considering physical and computational aspects, the correctness of the simulations is demonstrated by comparing to analytical theories and spacecraft observations, and new scientific results gained with this model are presented. fi
dc.language.iso en fi
dc.publisher Finnish Meteorological Institute fi
dc.relation.ispartofseries Vlasiator – From local to global magnetospheric hybrid-Vlasov simulations Contributions 127 fi
dc.subject space plasma physics fi
dc.subject numerical simulation fi
dc.subject hybrid-vlasov model fi
dc.subject high-performance computing fi
dc.title Vlasiator – From local to global magnetospheric hybrid-Vlasov simulations fi
dc.type Thesis fi

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