Original ResearchPublished 14 September 2026Testing CaII K chromospheric flare precursors with spectropolarimetric inversions and data-constrained LARE2D simulationsJuie Shetye · Akshit Mehta · Aman Priyadarshi M. KumarFrontiers in Astronomy and Space Sciencesdoi 10.3389/fspas.2026.1897640