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Solar Wind Outflow and the Chromospheric Magnetic Network

Solar Wind Outflow and the Chromospheric Magnetic Network

Publication date: 05 February 1999

Authors: Hassler, D., et al.

Journal: Science
Volume: 283
Issue: 5403
Page: 810-813
Year: 1999

Copyright: AAAS

Observations of outflow velocities in coronal holes (regions of open coronal magnetic field) have recently been obtained with the Solar and Heliospheric Observatory (SOHO) spacecraft. Velocity maps of Ne7+ from its bright resonance line at 770 angstroms, formed at the base of the corona, show a relationship between outflow velocity and chromospheric magnetic network structure, suggesting that the solar wind is rooted at its base to this structure, emanating from localized regions along boundaries and boundary intersections of magnetic network cells. This apparent relation to the chromospheric magnetic network and the relatively large outflow velocity signatures will improve understanding of the complex structure and dynamics at the base of the corona and the source region of the solar wind.

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