Interstellar Object 3I/ATLAS: Post-Perihelion Evolution, Spectral Variability, and Implications for Extraterrestrial Matter Exchange

This paper presents a comprehensive post-perihelion analysis of the interstellar object 3I/ATLAS, focusing on its anomalous thermal evolution, non-gravitational acceleration, and nickel-rich refractory composition. Through comparative modeling of sublimation rates, polarization, and spectral bands of hydrated silicates, the study proposes a new classification framework distinguishing 3I/ATLAS from canonical solar comets. All datasets used are derived from publicly available JWST, Gaia, and JPL observations.

DOI: https://doi.org/10.5281/zenodo.17565918