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Watch a scientific presentation exploring magnetic field studies in cool evolved stars' envelopes, focusing on their significant mass loss rates and contribution to interstellar medium enrichment. Delve into research conducted at the Laboratoire d'Astrophysique de Bordeaux examining how magnetic fields and atmospheric dynamics influence stellar mass loss. Learn about observations made using the Xpol polarimeter at IRAM-30m telescope, studying SiO maser line emissions and Stokes parameters to measure magnetic field strengths. Understand the findings that challenge the global poloidal field theory while suggesting possible combinations of toroidal and poloidal fields, with observed variations potentially linked to stellar pulsation and photospheric activity. Discover the implications of these measurements for understanding the 2-5 stellar radii region and future directions in magnetic field research of evolved stars.
