Abstract Details


Name: K. Nagaraju
Affiliation: Indian Institute of Astrophysics
Conference ID: TVS202510147
Title: Potential of EUV spectropolarimetry to probe coronal magnetic fields
Authors and Co-Authors:
Abstract Type: Invited by SOC
Abstract: Accurate knowledge of coronal magnetic fields is crucial in understanding various coronal dynamics such as explosive events taking place from small to large scales, energy transportation and dissipation in the solar atmosphere, solar wind acceleration; to name only a few. The Zeeman effect in visible and infrared wavelengths is limited to probing only the line-of-sight component and confined to off-the-limb measurements. In this context spectropolarimetric measurements in EUV spectral lines provide a potential gateway to probe weak coronal magnetic field both on-disk as well as off-the-limb. With a suitable combination of spectral lines it is also possible to infer full magnetic field vector. I this talk I provide a list of EUV spectral lines which can be used to probe coronal magnetic field. As a demonstration I discuss about detailed FORWARD modelling of Ne VIII at 77 nm spectral line in probing coronal magnetic field. In addition I will also briefly mention about the instrument concepts, particularly about K-mirror polarimeter, related optics and their testing in the laboratory.