Essays about: "Field-Aligned Currents"
Showing result 1 - 5 of 6 essays containing the words Field-Aligned Currents.
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1. Possible Bow Shock Current Closure to Earth's High Latitude Ionosphere on Open Field Lines
University essay from Umeå universitet/Institutionen för fysikAbstract : The bow shock is formed due to the abrupt deceleration of the supersonic solar wind in front of the terrestrial magnetic field. The solar wind plasma and the Interplanetary Magnetic Field (IMF) are both compressed across the shock, and according to Ampère's law a current thus flows on the bow shock at all times. READ MORE
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2. Observations of Field-Aligned Currents and Their Role in Auroral Formation
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : Experimentally, it has been difficult to identify the exact physical processes atwork in the magnetosphere that drive the strong currents that later give rise to auroras. Theaim of this report has been to address this question by analyzing data gathered from Cluster-,MMS-, and DMSP satellite missions. READ MORE
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3. Bow shock current closure to Earth's polar ionosphere - A statistical study using AMPERE and OMNI data
University essay from Umeå universitet/Institutionen för fysikAbstract : The bow shock current is hypothesized to connect to the Earth's magnetosphere on open field lines and to contribute as a field aligned current to the polar ionospheric currents. In order to investigate this, two years of AMPERE data are used to compute the average region 1 currents, and average currents within the polar cap boundary, under different interplanetary magnetic field (IMF) clock angles and IMF magnitudes. READ MORE
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4. A detailed study of auroral fragments
University essay from Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, UppsalaavdelningenAbstract : Aurora occurs in various shapes, one of which is the hitherto unreported phenomenon of auroral fragments. For three periods of occurrence of these fragments their properties were studied in detail during this master’s thesis, using mainly ground-based instrumentation located near Longyearbyen on Svalbard, Norway. READ MORE
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5. Field-Aligned Currents and Flow Bursts in the Earth’s Magnetotail
University essay from Umeå universitet/Institutionen för fysikAbstract : We use electric and magnetic field data from MMS spacecraft between 2016 and 2017 tostatistically investigate earthward propagating plasma flow bursts and field-aligned currents(FACs) inside the plasma sheet of the geomagnetic tail. We observe that the occurrence rateof flow burst peaks around the midnight region with decreasing trend towards Earth and theplasma sheet flanks. READ MORE
