3 papers
astro-ph.SR2026
Depolarization and Polarization-Transfer Rates for Solar He I Lines due to Collisions with Neutral Hydrogen
Moncef Derouich, Saleh Qutub
Context. Neutral helium (He I) produces several spectral lines that are widely used for solar diagnostics. The role of collisions between He I atoms and neutral hydrogen (H I) in t…
astro-ph.SR2025
Collisional and magnetic effects on the polarization of the solar oxygen infrared triplet
Moncef Derouich, Saleh Qutub
Context: The scattering polarization of the infrared (IR) triplet of neutral oxygen (O\,\textsc{i}) near 777\,nm provides a powerful diagnostic of solar atmospheric conditions. How…
astro-ph.SR2025
Depolarization and polarization transfer rates for the C + H collisions in the solar photosphere
S. Qutub, Y. N. Kalugina, M. Derouich
This paper is a continuation of a series of studies investigating collisional depolarization of solar molecular lines like those of MgH, CN and C. It is focused on the case of…