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My thesis will cover the Cosmology application of Fast Radio Bursts (FRBs) and the study of FRBs’ origin. FRBs are mysterious millisecond radio signals. Using the scattering information from localized FRBs, we can have a better estimation of the Dispersion Measure (DM) contributed by the host galaxy components (DMh), and thus the DM contributed by the intergalactic medium (IGM), DM. Based on these results, the Hubble constant and Cosmological parameters can be constrained more accurately than in previous works that did not account for scattering. Another project is about the future constraints on the dark matter with gravitational lensed FRBs. My home country, Taiwan is building a new telescope, the Bustling Universe Radio Survey Telescope in Taiwan (BURSTT) dedicated to FRB searches. In this project, I estimate the probability to find gravitationally lensed FRBs, based on the scaled redshift distribution from the latest CHIME catalog (Masui and Chime/Frb Collaboration, 2021) and the lensing probability function from (Munoz et al., 2016). Using this result, we can constrain primordial black holes (PBHs) to form a part of dark matter in the low mass range (down to 10-4 solar mass). While doing this project, I also hope to link the Australian and Taiwanese astronomy communities together and look forward to more future collaboration. Besides Cosmology, I will predict the number of FRB detection from Globular Clusters (GCs). We will use MeerKAT data and CryoPAF-Parkes data for this project. A last possible side project that I will be working on is the search for the optical counterparts of FRBs with the Tomo-e Gozen telescope and the Seimei telescope. Both of these projects will lead us to a better understanding of the FRB origin. |
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