Abstracts Details


First Name * : Ram Ajor
Last Name * : Maurya
Affiliation * : NIT, Calicut
Abstract Type * : Poster
Title * : MHD Waves and Oscillations in the Solar Atmosphere
Author(s) * : R.A. Maurya and R. Jain
Abstract Session * : Chromospheric dynamics
Abstract * : Recent observations have revealed that MHD waves and oscillations are ubiquitous in the solar atmosphere, with a wide range of periods. Their significance has increased due to their potential as a remote diagnostic tool to investigate the atmospheric properties. Basically, there are two types of oscillations in the solar atmosphere, propagating waves and standing waves. Chromospheric running penumbral waves and oscillations are examples of propagating waves, and can be used to explore the Chromospheric dynamics. Propagating waves play a major role in heating the solar atmosphere and acceleration of the solar wind. The standing oscillations are comprised of kink modes and slow modes. The kink wave speed depend on density (temperature) and magnetic field strength. The slow waves are found to be mainly damped by thermal conduction and viscosity in hot coronal loops. Several seismology applications of these waves such as determination of the magnetic field, temperature, and density in solar coronal are demonstrated. In this talk, I will start with a brief overview of MHD waves and oscillations in the solar atmosphere. Then, I will discuss our works on waves and oscillations in the chromosphere and corona.