Original ResearchPublished 23 September 2026Formation-height diagnostics across a sunspot: a comparison of Lightweaver radiative transfer and NICOLE inversions using the Ca ii 8542Å lineTimothy J. Duckenfield · David B. Jess · Shahin Jafarzadeh · Luc Rouppe van der Voort · Vasco M. J. HenriquesFrontiers in Astronomy and Space Sciencesdoi 10.3389/fspas.2026.1873920
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
