Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 33, issue 12
Articles | Volume 33, issue 12
https://doi.org/10.5194/angeo-33-1485-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/angeo-33-1485-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 33, issue 12
Regular paper
 | Highlight paper
 | 
09 Dec 2015
Regular paper | Highlight paper |  | 09 Dec 2015

Magnetospheric conditions near the equatorial footpoints of proton isotropy boundaries

V. A. Sergeev, I. A. Chernyaev, V. Angelopoulos, and N. Y. Ganushkina

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Short summary
Adaptive magnetospheric models based on THEMIS magnetic observations made at 6-9Re in the nightside magnetosphere are used to map the magnetically conjugate 30 and 80keV proton isotropy boundaries (IBs) to investigate the value of Kib=Rc/rc (magnetic curvature radius to particle gyroradius) in the neutral sheet at the IB generation place. For the most accurate mapping, the group Kib spread spans from 4 to 32; its median value is ~13, slightly larger than Kib8 expected for current sheet scatter.
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