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Analysis of optical and radar observation of pulsating aurora
Energetic electrons travelling along the magnetic field lines collide with the atmospheric particles, exciting the light we see as auroral displays.
Auroras can look in many different ways. An interesting type of aurora is the pulsating aurora. Patches of light intensify quasiperiodically with characteristic times of 10-20 seconds. There are a few theories for the generation of this type of pulsations. Comparing the observations with predictions that can be derived from the theories is crucial in advancing the understanding of the processes governing the auroral displays.
In 2006/7 our team had the ASK multispectral auroral imager located in Tromsö, Norway carrying out routine observations of the aurora. During the 5 months of operations pulsating aurora was observed on a number of occasions. Often, there was support from other instruments observing the ionosphere, such as the EISCAT radar (European Incoherent Scatter radar), the ALIS tomographic system (Auroral Large Imaging System), and other instruments.
The objective of the proposed project is to characterize the pulsating aurora event observed in the ASK database, and,
combining with the supplementary data, determine the energy characteristics of the precipitating electrons. These observations will be compared with other experimental reports of the pulsating aurora, and the existing models for its generation.
Your interests include: plasma physics, space physics, atomic and molecular physics.
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