Abstract Details
| Name: Abhishek Kumar Srivastava Affiliation: Department of Physics, Indian Institute of Technology (BHU), Varanasi-221005, India Conference ID: ASI2018_1370 Title : On Understanding New Heating Candidates for Sun's Corona Authors and Co-Authors : A.K. Srivastava Department of Physics, Indian Institute of Technology (BHU), Varanasi-221005, India. Abstract Type : Invited Abstract Category : Sun and the Solar System Abstract : Understanding the existence of the Sun's hot corona and supersonic solar wind is the outstanding problem in solar astrophysics. Although magnetohydrodynamic (MHD) wave modes and dissipation of magnetic energy via direct reconnection process contribute to heating and the mass transport of the solar atmosphere, yet the direct signature of such processes often generates extensive debate. In the present talk, I review the development on understanding the physics of potential heating candidates in the Sun's atmosphere. I also discuss two firstly directly observed physical processes, e.g., high-frequency torsional Alfven waves in the fine structured magnetic tubes (Srivastava et al., 2017, Nature SR, 7, 43147), and pseudo-shock sources in the solar active regions (Srivastava et al., 2017, Nature Astronomy, under-review) as new heating candidates in Sun's corona. I demonstrate that they serve as substantial sources providing sufficient Poynting flux not only to energize the localized inner corona but also to originate the wind. |