講演情報
[PPS02-P09]Simultaneous 98-fps multi-band photometry and temperature evolution of a Geminid lunar impact flash
*有馬 宣明1、青木 翼1、荒木 湧斗1、阿部 新助1、川端 美穂2、有松 亘3 (1.日本大学、2.京都大学、3.石垣島天文台)
キーワード：
月、月面衝突閃光、流星体、ふたご座流星群
We report on the first simultaneous three-band (g, r, z) photometry of a lunar impact flash (LIF) with TriCCS on the 3.8 m Seimei Telescope during the 2025 Geminid meteor shower. The event began with a simultaneous three-band emission lasting three frames (~ 30 ms), with the z-band emission persisting for ~ 100 ms. While the r- and z-band data were consistent with a single-temperature blackbody model of T ~ 2800-3600 K, the g-band exhibited a significant systematic flux excess. This implies the existence of additional emission components beyond the single-temperature blackbody model inferred from previous works. In this presentation, we discuss the LIF event in detail and outline prospects for future work.