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| 2025년 10월 24일(금) 세미나 안내 | ||
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제목: Galaxy Clusters as Large Dark Matter Colliders 연사: Prof. David Wittman (UC Davis) 일시: 2025년 10월 24일 금요일 11:00 장소: 과학관 B103호
Abstract: Galaxy clusters are composed of galaxies (about 3% of the total mass), diffuse gas (about 15%), and dark matter (DM, the remainder). When two clusters collide, the three components show interestingly different behaviors that reveal their collisional or noncollisional nature. Astrophysical arguments like this are the only way to probe DM-DM interactions. But for any one merger we see only a snapshot of a ~1 Gyr process, so truly understanding the implications of a given snapshot requires extensive modeling. I will describe advances in finding and modeling merger clusters in an effort to build an ensemble capable of probing DM interactions.
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