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Browsing Physics by Author "Grimes, E. W."
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Comparison of TWINS and THEMIS observations of proton pitch angle distributions in the ring current during the 29 May 2010 geomagnetic storm
Grimes, E. W.; Perez, J. D.; Goldstein, J.; McComas, D. J.; Valek, P.; Turner, D. (2020-06-09)
The first comparison between energy-dependent ion pitch angle distributions in the ring current deconvolved from Two Wide-angle Imagining Neutral-atom Spectrometers (TWINS) energetic neutral atom (ENA) images and measured ...
Evolution of CIR storm on 22 July 2009
Perez, J. D.; Grimes, E. W.; Goldstein, J.; McComas, D. J.; Valek, P.; Billor, N. (2020-06-09)
Global images of ion intensities are deconvolved from TWINS ENA images during the main and recovery phase of a CIR storm on 22 July 2009. The global spatial ion images taken at different times, along with solar wind data, ...
Global observations of ring current dynamics during corotating interaction region-driven geomagnetic storms in 2008
Grimes, E. W.; Perez, J. D.; Goldstein, J.; McComas, D. J.; Valek, P. (2020-06-12)
We examine the evolution of the ring current during the main and early recovery phases of three geomagnetic storms driven by corotating interaction regions. The equatorial energy density profiles of 5-30 keV ions are ...