Heliospheric Current Sheet Distortions from Adjacent Outflowing Transients: Multi-spacecraft Observations

Details Heliospheric Current Sheet Distortions from Adjacent Outflowing Transients: Multi-spacecraft Observations Heliospheric Current Sheet Distortions from Adjacent Outflowing Transients: Multi-spacecraft Observations

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1216..367f&link_type=abstract

TWELFTH INTERNATIONAL SOLAR WIND CONFERENCE. AIP Conference Proceedings, Volume 1216, pp. 367-370 (2010).

Physics

1

Solar Wind, Spacecraft, Magnetic Field Effects, Electron-Electron Scattering, Heliopause And Solar Wind Termination, Spacecraft/Atmosphere Interactions, Magnetosheath, Elastic Scattering Of Electrons By Atoms And Molecules

Scientific paper

The heliospheric current sheet (HCS) is a permanent solar wind feature, with well predicted Earth passages, but it can be structured and its main orientation can be highly distorted. We report new observations from 2 spacecraft in the solar wind (supported by observations from 3 spacecraft in the nightside magnetosheath), showing an evolution across the Sun-Earth line of large field reversals adjacent to the HCS. Contrary to a previously reported multi-spacecraft event, this case shows that the field inversion structure cannot be assumed to be well preserved and close to planar on the scale of the magnetospheric cross-section. However, both cases indicate the presence of field reversals in an away sector that is connected to the southern solar magnetic hemisphere but lies unexpectedly above a toward sector. Following the interpretation of the reversals as transient outflowing loops, associated initial flow deviations can be envisaged to account for the HCS deformations.

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