천문우주과학과

일시:  2020년 10월 08일 목요일 오전 11시(ZOOM 회의 ID:932 6693 1767, PW:612443)

연사:  박혜연 박사님(Brookhaven National Laboratory)

제목: Importance of precise photometric redshift estimation and CCD sensor effects of the Vera C. Rubin Observatory

 초록:  

 The Vera C. Rubin Observatory (new name for Large Synoptic Survey Telescope - LSST) is proposed to study dark matter and dark energy, collaborating with Dark Energy Science Collaboration (DESC). The large scale structure which takes an important role in understanding grouping mass in the Universe is hard to detect precisely and hence small error can result in drastic changes in corresponding theories. Sensor anomalies and photometric redshift are the main areas studied to find and correct the error in measurement of the cosmological parameters more precisely and more accurately. With improved understanding of blending effects and effective corrections of instrumental effects, we are one step closer to measure properties of dark energy and dark matter. More accurate and precise measurement of the cosmological parameters will support the survey to understand how the Universe has been formed and transformed over time.