Magnetic Reconnection at a Three-dimensional Solar Null Point: Geophysical Research Abstracts, vol.14, European Geosciences Union, General Assembly 2012,
Publikation: Konferencebidrag › Poster › Forskning
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Magnetic Reconnection at a Three-dimensional Solar Null Point : Geophysical Research Abstracts, vol.14, European Geosciences Union, General Assembly 2012, . / Frederiksen, Jacob Trier; Baumann, Gisela; Galsgaard, Klaus; Haugbølle, Troels; Nordlund, Åke.
2012.Publikation: Konferencebidrag › Poster › Forskning
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TY - CONF
T1 - Magnetic Reconnection at a Three-dimensional Solar Null Point
T2 - Geophysical Research Abstracts, vol.14, European Geosciences Union, General Assembly 2012,
AU - Frederiksen, Jacob Trier
AU - Baumann, Gisela
AU - Galsgaard, Klaus
AU - Haugbølle, Troels
AU - Nordlund, Åke
PY - 2012/4/22
Y1 - 2012/4/22
N2 - Using a specific solar null point reconnection case studied byMasson et al (2009; ApJ 700, 559) we investigate the dependence of thereconnection rate on boundary driving speed, numerical resolution,type of resistivity (constant or numerical), and assumed stratification(constant density or solar-like). The MHD simulations start out from apotential magnetic field containing a null-point, obtained from aSOHO magnetogram extrapolation approximately 8 hours before aC-class flare was observed. The magnetic field is stressed with aboundary motion pattern similar to the horizontal motions observedby SOHO during the period preceding the flare. The general behavioris nearly independent of driving speed and numerical resolution, andis also very similar in stratified and unstratified models, provided onlythat the boundary motions are slow enough.
AB - Using a specific solar null point reconnection case studied byMasson et al (2009; ApJ 700, 559) we investigate the dependence of thereconnection rate on boundary driving speed, numerical resolution,type of resistivity (constant or numerical), and assumed stratification(constant density or solar-like). The MHD simulations start out from apotential magnetic field containing a null-point, obtained from aSOHO magnetogram extrapolation approximately 8 hours before aC-class flare was observed. The magnetic field is stressed with aboundary motion pattern similar to the horizontal motions observedby SOHO during the period preceding the flare. The general behavioris nearly independent of driving speed and numerical resolution, andis also very similar in stratified and unstratified models, provided onlythat the boundary motions are slow enough.
M3 - Poster
ER -
ID: 38105707