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astro-ph.EP2026
Post-perihelion dust activity and a candidate icy-grain halo in long-period comet C/2023 A3 (Tsuchinshan--ATLAS)
Bin Liu, Xiaoping Zhang, Xiaodong Liu +1
We analyze the post-perihelion coma of the Great Comet of 2024, C/2023 A3 (Tsuchinshan--ATLAS) to characterize dust activity and assess the contribution of sublimating icy grains t…
astro-ph.EP2026
Dust Activity Evolution and Constraints on Icy Grains in the Interstellar Comet 3I/ATLAS
Bin Liu, Xiaoping Zhang, Xiaodong Liu +1
We present Zwicky Transient Facility observations of the interstellar comet 3I/ATLAS to characterize its dust-activity evolution before and after perihelion. Before perihelion, the…