Title of Abstract
Data-driven Simulations of the Formation and Eruption of a Flux Rope
Magnetic Flux Ropes from the Sun to the Heliosphere
Duncan H Mackay
University of St Andrews
G Gibb, L Green and K Meyer
Summary (maximum 250 words)
The data driven modeling technique of Mackay et al. (2011) is applied to simulate the coronal magnetic field of NOAA active region AR10977 over a seven day period. The simulation is driven directly with a sequence of line-of-sight component magnetograms and evolves the coronal magnetic field though a continuous series of non-linear force-free states. Upon comparison with Hinode/XRT observations, results show that the simulation reproduces many features of the active region's evolution. In particular, it describes the formation of a flux rope across the polarity inversion line during flux cancellation. The flux rope forms at the same location as an observed X-ray sigmoid. After five days of evolution the flux rope erupts close to the observed time of a B1.4 GOES flare.
The free magnetic energy contained within the flux rope was found to be 3.9 × 10^30 erg which is more than sufficient to account for the observed flare. Based on the initial success of the modelling technique future space weather applications will be discussed.


Session Time
13:30 - 15:00
Talk start