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2019-05-16 Abstract

Title: The Survey Plans of the Five-hundred-meter Aperture Spherical radio Telescope (FAST)
Speaker:  Prof. Di Li (NAOC)
Date: May 16 at 12:00
Location: R620, Physics building 
While still under commissioning, FAST just releases its first ‘shared-risk’ proposal call. It is expected to transit into normal operation toward the end of 2019 with a mixed PI-led projects and survey programs. The pilot observations of two surveys, namely the Commensal Radio Astronomy FAST Survey (CRAFTS, Li et al. 2018) and the Galactic-plane and Andromeda Survey (GAS), are underway. Utilizing an unprecedented commensal survey mode, CRAFTS will cover 57% of the whole sky ( -14d<DEC<66d) in drift-scan mode and obtain pulsar search, HI imaging, HI galaxy, and FRB data streams simultaneously. The equivalent integration time for HI galaxies, e.g., range between 34s and 150s. GAS, covering the Galactic plane and M31, is designed to obtain beam-sampled mosaics of 1h integration each, which will achieve a HI surface sensitivity of 5x10^16 cm^-2. In the next 5 years, these FAST surveys will discover more than a thousand pulsars, more than half a million gaseous galaxies, the deepest large scale HI images with absolute flux calibration, and many transients. These discoveries have the potential to facilitate the most accurate gravity test in a astrophysical setting, to substantially improve the knowledge of cosmic baryons, to provide insight into the origin of local hot bubble, to help understand the origin of FRBs.


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