Abstract Details
| Name: NAMBRAM NIRODA DEVI Affiliation: ASSAM UNIVERSITY SILCHAR Conference ID: ASI2025_509 Title : Exploring the Umov Effect in Dust Aggregates: Influence of Material Composition and Size Distribution Authors and Co-Authors : Nambram Niroda Devi 1 , Himadri Sekhar Das 1, Abinash Suklabaidya 2 , Bhaskar Goswami 1 Abstract Type : Poster Abstract Category : Stars, Interstellar Medium, and Astrochemistry in Milky Way Abstract : This study investigates the Umov effect—an inverse correlation between reflectivity and the degree of linear polarization of scattered light—within the context of aggregate dust models. We analyze both polydisperse and monodisperse aggregates, employing the multisphere T-matrix (MSTM) code to simulate light scattering by various dust compositions, including carbonaceous materials, silicates, and Halley-like dust. The research highlights the impact of particle size distribution on the Umov effect and explores the optical properties of different aggregate types over a range of refractive indices. Our findings contribute to a deeper understanding of light scattering in cosmic dust environments. |