Journal cover Journal topic
Annales Geophysicae An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 1.490 IF 1.490
  • IF 5-year value: 1.445 IF 5-year
    1.445
  • CiteScore value: 2.9 CiteScore
    2.9
  • SNIP value: 0.789 SNIP 0.789
  • IPP value: 1.48 IPP 1.48
  • SJR value: 0.74 SJR 0.74
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 88 Scimago H
    index 88
  • h5-index value: 21 h5-index 21
Volume 30, issue 6
Ann. Geophys., 30, 1003–1013, 2012
https://doi.org/10.5194/angeo-30-1003-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 30, 1003–1013, 2012
https://doi.org/10.5194/angeo-30-1003-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.

Regular paper 28 Jun 2012

Regular paper | 28 Jun 2012

Energetic electrons along the high-latitude magnetopause

B. M. Walsh1,2, S. E. Haaland3,4, P. W. Daly3, E. A. Kronberg3, and T. A. Fritz1 B. M. Walsh et al.
  • 1Center for Space Physics, Boston University, Boston, MA, USA
  • 2NASA, Goddard Space Flight Center, Greenbelt, MD, USA
  • 3Max Planck Institute for Solar System Research, Lindau, Germany
  • 4Department of Physics and Technology, University of Bergen, Bergen, Norway

Abstract. A case study is presented to determine the source of the energetic electron layer frequently observed along the high-latitude magnetopause. Measurements by the Cluster spacecraft show bursts of field-aligned electrons occurring during time periods with high potential for dayside reconnection. These properties are compared with the expected signatures from several sources including escape from the exterior cusp, acceleration in a reconnection region, and release from the dayside trapping region through reconnection. The observed properties are most consistent with the electrons being released from the magnetosphere due to reconnection. In this model the electrons would flow along the newly reconnected IMF draped along the magnetopause and propagate along the high-latitude magnetopause. These observations demonstrate an active source for populating the energetic particle layer frequently observed along and just outside the high-latitude magnetopause.

Publications Copernicus
Download
Citation