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Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data
Published on: December 12, 2013
Solar wind outflow and the chromospheric magnetic network
1Southwest Research Institute, 1050 Walnut Street, Boulder, CO 80302, USA. Max-Planck-Institut fur Aeronomie, D-37191 Katlenburg-Lindau, Germany. Institut d'Astrophysique Spatiale, Unite Mixte CNRS- Universite Paris XI, 91405 Orsay, France. Ins.
Science (New York, N.Y.)
|February 5, 1999
Summary
Solar wind originates from specific regions in coronal holes, linked to the chromospheric magnetic network. These findings improve understanding of the solar wind
Area of Science:
- Solar Physics
- Heliophysics
- Plasma Physics
Background:
- Coronal holes are regions of open magnetic field lines in the Sun's corona.
- Understanding the solar wind's origin is crucial for space weather prediction.
- Previous observations lacked detailed velocity mapping at the coronal base.
Purpose of the Study:
- To investigate the relationship between outflow velocities and magnetic structures at the base of the corona.
- To identify the specific source regions of the solar wind.
- To enhance the understanding of coronal dynamics.
Main Methods:
- Utilized the Solar and Heliospheric Observatory (SOHO) spacecraft.
- Created velocity maps of Ne7+ using its resonance line at 770 angstroms.
- Correlated outflow velocities with chromospheric magnetic network structure.
Main Results:
- Outflow velocities in coronal holes show a clear relationship with the chromospheric magnetic network.
- Solar wind appears to originate from localized regions along boundaries and intersections of magnetic network cells.
- Large outflow velocity signatures were observed, linked to this network structure.
Conclusions:
- The solar wind is rooted in the chromospheric magnetic network at the coronal base.
- Localized regions along magnetic network boundaries are key source areas for the solar wind.
- These findings provide new insights into the dynamics of the solar wind's origin.
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