Abstract Details
| Name: Devang Agnihotri Affiliation: Indian Institute of Astrophysics Conference ID: ASI2025_723 Title : Understanding Hanle effect in Ca I 4227 A line using magnetohydrodynamic simulations of the Solar atmosphere Authors and Co-Authors : Devang Agnihotri, L.S. Anusha Abstract Type : Poster Abstract Category : Sun, Solar System, Exoplanets, and Astrobiology Abstract : Scattering polarization in strong resonance lines such as the Ca I 4227 Å, formed in the chromosphere can probe the chromospheric magnetic fields via the Hanle effect. Predominantly one-dimensional (1D) semi-empirical model atmospheres were used to study the linear polarization in this line. Recently, Harsh et al. (2024) studied the resonance scattering polarization in Ca I 4227 Å using magnetohydrodynamic (MHD) simulations of the solar atmosphere from the Bifrost code, along a slanted ray with heliocentric angle μ=0.3. In this work we include the effect of weak magnetic fields (Hanle effect) on the polarization profiles and compare them with the non-magnetic cases. |