Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 37, issue 2
Articles | Volume 37, issue 2
https://doi.org/10.5194/angeo-37-243-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-37-243-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 37, issue 2
Regular paper
 | 
17 Apr 2019
Regular paper |  | 17 Apr 2019

Reflection of the strahl within the foot of the Earth's bow shock

Christopher A. Gurgiolo, Melvyn L. Goldstein, and Adolfo Viñas

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Latest update: 31 Oct 2025
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Short summary
The reflection of solar wind electrons at the bow shock helps define the physical properties of the foreshock, the region where the interplanetary magnetic field directly connects to the bow shock. We report that the strahl, the field-aligned component of the electron solar wind distribution, appears to be nearly fully reflected at the bow shock and that the reflection occurs in the foot of the shock, implying that mirroring is not the primary cause of the electron reflection.
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