Abstract Details
| Name: Manu Gupta Affiliation: CESSI-IISER, Kolkata Conference ID: ASI2019_336 Title : A study of solar corona using nonlinear force-free field model Authors and Co-Authors : 1) Manu Gupta 2) Dibyendu Nandy 3) Soumyaranjan Dash Abstract Type : Poster Abstract Category : Sun and the Solar System Abstract : Dynamics in the solar magnetic field gives rise to myriads of eruptive phenomena like flares and coronal mass ejections. These violent eruptions spew highly energetic plasma into interplanetary medium. If oriented towards the earth these stream of particles can impact our telecommunication systems, power grids and space assets adversely. To understand the origin and formation of these solar eruptive events we need to know the three-dimensional structure of the solar coronal magnetic field. Given the scarcity of direct observational measurements of solar coronal magnetic field, we rely on theoretical models and simulations to understand the evolution of the solar corona. We study the magnetic field structures in the solar atmosphere by developing a three-dimensional computational model that generates magnetic field configurations of the corona satisfying the force-free condition. This model is based on extrapolation techniques while utilizing the vector magnetic field measurements of the solar photosphere. Such a model is known as nonlinear force-free field extrapolation model. |