Neutral atom imaging of the magnetospheric cusps

S. M. Petrinec, M. A. Dayeh, H. O. Funsten, S. A. Fuselier, D. Heirtzler, P. Janzen, H. Kucharek, D. J. McComas, E. Möbius, T. E. Moore, D. B. Reisenfeld, N. A. Schwadron, K. J. Trattner, P. Wurz

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

The magnetospheric cusps separate closed dayside magnetospheric field lines from open field lines of the magnetotail mantle and lobes. All magnetospheric field lines that map to the magnetopause also pass through the cusp regions. Thus whenever magnetic reconnection occurs at the magnetopause, magnetosheath plasma can enter one or both of the cusp regions and charge exchange with the geocorona. The resulting energetic neutral atoms (ENAs) resulting from this charge exchange process propagate away from the cusps and are observed remotely by the Interstellar Boundary Explorer (IBEX). The asymmetry of the ENA intensities between the northern and southern cusps are strongly dependent upon the Earth's dipole tilt angle and are consistent with in situ cusp observations. These asymmetric fluxes in the cusp regions are suggested to be explained by the regions at the magnetopause where magnetic reconnection is expected.

Original languageEnglish (US)
Article numberA07203
JournalJournal of Geophysical Research: Space Physics
Volume116
Issue number7
DOIs
StatePublished - 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Fingerprint Dive into the research topics of 'Neutral atom imaging of the magnetospheric cusps'. Together they form a unique fingerprint.

  • Cite this

    Petrinec, S. M., Dayeh, M. A., Funsten, H. O., Fuselier, S. A., Heirtzler, D., Janzen, P., Kucharek, H., McComas, D. J., Möbius, E., Moore, T. E., Reisenfeld, D. B., Schwadron, N. A., Trattner, K. J., & Wurz, P. (2011). Neutral atom imaging of the magnetospheric cusps. Journal of Geophysical Research: Space Physics, 116(7), [A07203]. https://doi.org/10.1029/2010JA016357