세미나
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| 2022년 3월 25일(금) 세미나 안내 | ||
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제목: Journey of Aspera from a whiteboard to drawings and beyond - development of Aspera, the UV Small-Satellite for mapping warm-hot gas in nearby galaxy halos 연사: Haeun Chung (University of Arizona) 일시: 2022년 3월 25일 금요일 10:30 장소: 온라인
Abstract: Aspera is a new UV Small-Satellite mission to detect and map the warm-hot phase halo gas (10^5-10^6 K) around the nearby galaxies, led by the University of Arizona (PI: Carlos Vargas). The warm-hot phase gas occupies a considerable fraction of the galaxy baryonic mass budget. However, its amount and distribution are poorly unknown observationally. Aspera is specifically designed to observe those gas via UV spectroscopic observation of O VI line emission at 103.2 nm, a proxy of hot phase gas. The high sensitivity of Aspera down to 5E-19 ergs/s/cm^2/arcsec^2 as well as a large field of view of 30 arcsec x 1 degrees allow detecting the faint O VI line emission efficiently. Aspera has been selected as one of the inaugural NASA Astrophysics Pioneers missions in early 2021. It has passed its conceptual design review and is now in the preliminary design phase, with a launch date of mid-2025. In this talk, I will present the journey of Aspera from the concept to the mission development while introducing the science objective and payload design of the Aspera mission.
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