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Browsing College of Sciences and Mathematics by Author "J. D. Perez, perez@physics.auburn.edu"

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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; Perez, J; Goldstein, J; McComas, D; Valek, P; Turner, D; 0000-0002-2425-7818; 0000-0002-2318-8750 (2022-12-02)
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 ...

Dynamics of ring current ions as obtained from IMAGE HENA and MENA ENA images 

Perez, J; Zhang, X; Brandt, P; Mitchell, D; Jahn, J; Pollock, C; 0000-0002-4644-0306; 0000-0003-1960-2119 (2022-10-27)
Ion distributions from three storms in the year 2000 have been obtained from HENA and MENA ENA images at 27-39 keV and 5-12 keV, respectively. The observed motion of the ring current is compared with calculations of expected ...

Evolution of CIR storm on 22 July 2009 

Perez, J.D.; Grimes, E.W.; Goldstein, J.; McComas, D.J.; Valek, P.; Billor, Nedret; 0000-0002-2318-8750; 0000-0001-6160-1158 (2022-10-25)
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 images of trapped ring current ions during main phase of 17 March 2015 geomagnetic storm as observed by TWINS 

Perez, J; Goldstein, J; McComas, D; Valek, P; Fok, M; Hwang, Kyoung-Joo; 0000-0001-9500-866X; 0000-0002-2318-8750 (2023-01-26)
A unique view of the trapped particles in the inner magnetosphere provided by energetic neutral atom (ENA) imaging is used to observe the dynamics of the spatial structure and the pitch angle anisotropy on a global scale ...

TWINS stereoscopic imaging of multiple peaks in the ring current 

Perez, J. D.; Goldstein, J.; McComas, D. J.; Valek, P.; Buzulukova, N.; Fok, M. -C.; Singer, H. J. (2020-06-05)
Global, ion equatorial flux distributions and energy spectra are presented from stereoscopic Two Wide-Angle Imaging Neutral-Atom Spectrometers (TWINS) 1 and TWINS 2 energetic neutral atom (ENA) images for two time periods, ...

TWINS stereoscopic imaging of multiple peaks in the ring current 

Perez, J; Goldstein, J; McComas, D; Valek, P; Buzulukova, N; Fok, M; Singer, H; 0000-0001-9500-866X; 0000-0002-2318-8750 (2023-01-25)
Global, ion equatorial flux distributions and energy spectra are presented from stereoscopic Two Wide-Angle Imaging Neutral-Atom Spectrometers (TWINS) 1 and TWINS 2 energetic neutral atom (ENA) images for two time periods, ...