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Magnetic reconnection driven by filament eruption in the 7 June 2011 event

Published online by Cambridge University Press:  06 January 2014

L. van Driel-Gesztelyi ,
D. Baker ,
T. Török ,
E. Pariat ,
L. M. Green ,
D. R. Williams ,
J. Carlyle ,
G. Valori ,
P. Démoulin  and
S. A. Matthews
...Show all authors
L. van Driel-Gesztelyi
Affiliation:
University College London, Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris Diderot, 5 place Jules Janssen, 92190 Meudon, France; email: Lidia.vanDriel@obspm.fr Konkoly Observatory, Hungarian Academy of Sciences, Budapest, Hungary
D. Baker
Affiliation:
University College London, Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK
T. Török
Affiliation:
Predictive Science Inc., 9990 Mesa Rim Rd., Suite 170, San Diego, CA 92121, USA
E. Pariat
Affiliation:
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris Diderot, 5 place Jules Janssen, 92190 Meudon, France; email: Lidia.vanDriel@obspm.fr
L. M. Green
Affiliation:
University College London, Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK
D. R. Williams
Affiliation:
University College London, Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK
J. Carlyle
Affiliation:
University College London, Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK
G. Valori
Affiliation:
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris Diderot, 5 place Jules Janssen, 92190 Meudon, France; email: Lidia.vanDriel@obspm.fr
P. Démoulin
Affiliation:
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris Diderot, 5 place Jules Janssen, 92190 Meudon, France; email: Lidia.vanDriel@obspm.fr
S. A. Matthews
Affiliation:
University College London, Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK
B. Kliem
Affiliation:
Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
J.-M. Malherbe
Affiliation:
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris Diderot, 5 place Jules Janssen, 92190 Meudon, France; email: Lidia.vanDriel@obspm.fr
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Abstract

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During an unusually massive filament eruption on 7 June 2011, SDO/AIA imaged for the first time significant EUV emission around a magnetic reconnection region in the solar corona. The reconnection occurred between magnetic fields of the laterally expanding CME and a neighbouring active region. A pre-existing quasi-separatrix layer was activated in the process. This scenario is supported by data-constrained numerical simulations of the eruption. Observations show that dense cool filament plasma was re-directed and heated in situ, producing coronal-temperature emission around the reconnection region. These results provide the first direct observational evidence, supported by MHD simulations and magnetic modelling, that a large-scale re-configuration of the coronal magnetic field takes place during solar eruptions via the process of magnetic reconnection.

Keywords

MHDinstabilitiesSun: activitymagnetic fieldscoronal mass ejections (CMEs)filamentsmethods: numericaldata analysis

References

Lemen, J. R., Title, A. M., Akin, D. J., et al., 2012, Solar Phys. 275, 17CrossRefGoogle Scholar
van Driel-Gesztelyi, L., Baker, D., Török, T., Pariat, E., Green, L. M., Williams, D. R., Carlyle, J., Valori, G., Démoulin, P., Matthews, S. A., Kliem, B., & Malherbe, J.-M. 2013, ApJ, submitted.Google Scholar
Williams, D. R., Baker, D., & van Driel-Gesztelyi, L. 2013, ApJ, 764, 165CrossRefGoogle Scholar