Abstracts Details


First Name * : Hirdesh
Last Name * : Kumar
Affiliation * : Udaipur Solar Observatory, Physical Research Laboratory, Udaipur, Rajasthan
Abstract Type * : Poster
Title * : On the magnetic-jerk driven seismic emissions in the solar atmosphere observed during large flares
Author(s) * : H. Kumar, B. Kumar and C.R. Sangeetha
Abstract Session * : Thermal and magnetic coupling through the atmosphere
Abstract * : Solar flares are catastropic events in the solar atmosphere. Large solar flares have been observed to generate seismic waves in the Sun. We have studied seismic emissions accompanying 'M' and 'X' class flares using high resolution Dopplergram, line-of-sight magnetogram and vector magnetograms from Helioseismic Magnetic Imager (HMI) onboard Solar Dynamic Observatory (SDO) space mission. Our investigation provides evidence that impulsive changes in Lorentz force associated with abrupt changes in magnetic fields could excite seismic emissions in the sunspot regions.