Study of magnetic field topology of active region 12192 using an extrapolated non-force-free magnetic field

A. Prasad, R. Bhattacharyya, Q. Hu +2

The solar active region (AR) 12192 was one of the most flare productive region of solar cycle 24, which produced many X-class flares; the most energetic being an X3.1 flare on Octo…