Magnetohydrodynamics model of an X-class flare in NOAA active region 12017 initiated with non-force-free extrapolation

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dc.contributor.author Nayak, Sushree Sangeeta
dc.contributor.author Bhattacharyya, Ramit
dc.contributor.author Kumar, Sanjay
dc.coverage.spatial United States of America
dc.date.accessioned 2021-02-22T13:54:21Z
dc.date.available 2021-02-22T13:54:21Z
dc.date.issued 2021-02
dc.identifier.citation Nayak, Sushree Sangeeta; Bhattacharyya, Ramit and Kumar, Sanjay, "Magnetohydrodynamics model of an X-class flare in NOAA active region 12017 initiated with non-force-free extrapolation", Physics of Plasmas, DOI: 10.1063/5.0035086, vol. 28, no. 2, Feb. 2021. en_US
dc.identifier.issn 1070-664X
dc.identifier.issn 1089-7674
dc.identifier.uri https://doi.org/10.1063/5.0035086
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/6308
dc.description.abstract We present a three-dimensional magnetohydrodynamic simulation of the NOAA active region 12017 to explore the onset of an X-class flare on 2014 March 29 at 17:48 UT. The simulation is initiated with a magnetic field constructed by non-force-free-field extrapolation of the photospheric magnetic field. Importantly, the initial field contains a three-dimensional magnetic null, a pair of magnetic flux ropes, and a set of sheared arcades overlying the flux ropes at the flare location. A set of magnetic field lines are also identified which connect the flaring location to a distant region affected by the flare. The simulated evolution documents the magnetic reconnections at the null, which can potentially explain the observed chromospheric brightenings during the flare. The sheared arcades also appear to rise and participate in reconnections at the null. Notably, under the favorable initial Lorentz force, the flux ropes lose their twist due to reconnection. The terminal geometry of the ropes and the arcades are similar to the observed post-flare loops. Interestingly, the connecting field lines appear to take part in reconnections at the null, which may lead to the brightenings at the distant region. Further, the free energy released during the evolution which turns out to be ≈6.8×1031 ergs matches well with the observation.
dc.description.statementofresponsibility by Sushree S. Nayak, R. Bhattacharyy and Sanjay Kumar
dc.format.extent vol. 28, no. 2
dc.language.iso en_US en_US
dc.publisher American Institute of Physics en_US
dc.subject Magnetic reconnection en_US
dc.subject Solar corona en_US
dc.subject Solar atmosphere en_US
dc.title Magnetohydrodynamics model of an X-class flare in NOAA active region 12017 initiated with non-force-free extrapolation en_US
dc.type Article en_US
dc.relation.journal Physics of Plasmas


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