2023/03/10(Fri)
11:00 -12:00
五樓第一會議室 5F, 1st Meeting Room
視訊演講 Video Seminar [ Meeting Link / ID: 2510 120 0554 / Password: FridaySeminar23 ]
Title
Fast Radio Bursts: a mystery in modern astrophysics
Speaker
Dr. Hsiu-Hsien Lin (Institute of Astronomy and Astrophysics, Academia Sinica)Abstract
Fast Radio Bursts (FRBs) are the brightest radio transients (~1 ms) in the Universe with unknown origin. Such bright point sources with coherent emission can be used to probe space-time at the source and along the path through the gravitational and plasma lensing. About seven hundred FRBs have been published since the first discovery in 2007, of which two dozen sources have been observed with complex repetitions. About twenty FRBs have been localized to their host galaxies by interferometries, and only four of them have been pinpointed by the VLBI to local environments, including globular clusters and persistent radio sources. To understand their local environment and cosmological distribution, using VLBI outrigger stations to localize non-repeating FRBs with a milli-arcsecond resolution has been proposed. For instance, the Bustling Universe Radio Survey Telescope for Taiwan (BURSTT) could monitor FRBs with all-sky field-of-view, which will detect a large sample of nearby FRBs. Combining the all-sky FRBs survey with VLBI outriggers, the large sample with milli-arcsecond localizations will answer several opening questions of FRBs. In this talk, I will review the progress of the FRB field in the past decade with the connections to pulsars, discuss the potentially cosmological applications, and outline the future of the upcoming FRB era with the BURSTT project.
Language
演講語言 (Language): in English
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