{"id":"rawat2026delayed","URL":"https://arxiv.org/abs/2609.19694","type":"article","title":"Delayed Methane Detection in 3I/ATLAS: GCR-Driven Subsurface Stratification and Interstellar Exposure Age Constraints","author":[{"given":"Akshat","family":"Rawat"},{"given":"Kinsuk","family":"Acharyya"}],"issued":{"date-parts":[[2026]]},"container-title":"arXiv","catalog-key":"SRC0DFPWGSFWDG1"}