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Greenbelt, MD Full Time Posted by: NASA Posted: Tuesday, 23 February 2021
 
 

This area of investigation concerns the structures and fluctuations in the magnetic fields and low energy proton and electron particles present in the Earths magnetospheric boundaries and the surrounding solar wind. Fluctuations can appear as ultralow frequency waves determined from the magnetic field data using Fourier analysis. We study the structure of magnetospheric boundaries such as the bow shock and the magnetopause, emphasizing the flow of plasmas and waves starting upstream of the Earths bow shock, then passing into and through the magnetosheath region, and into the tail and/or the magnetosphere proper. We also consider the response of the boundaries separating the regions to the flows. Tools that exist to help in the analysis of the boundaries include a data base of bow shock crossings compiled from IMP 8, Geotail, Cluster and Magion-4 (Interball Tails subsatellite) spacecraft, and a data base of magnetopause crossings compiled from the Hawkeye and ISEE satellites. Tools also include Fourier analysis, shock normal determination software (which leads to shock characterization), minimum variance analysis, and boundary models. The CDAWeb system can be used to look for data on various time scales from current SEC missions like Cluster, Wind, ACE, IMP 8, Geotail, THEMIS, Van Allen Probes, and MMS, and Polar, and will include future data from Living with a Star and Solar Terrestrial Probes as these become available. We expect the applicant to obtain detailed knowledge in the use and interpretation of major types of magnetospheric data, and to develop and utilize modeling and analysis tools for visualizing space physics data.


Greenbelt, MD, United States of America
IT
NASA
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JS7750_8084522
2/23/2021 5:25:09 PM


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