Fast radio bursts (FRBs) are millisecond transients of unknown origin(s) occurring at cosmological distances. Since the first discovery of FRB,
more than 100 FRBs have been detected. Numerous theoretical
models of FRB progenitors have been proposed to date. However, the origin(s) is still unknown. One way to constrain the FRB progenitors is to search for counterparts in different wavelengths at the positions of FRBs. Another way is to investigate stellar populations of galaxies hosting FRBs.
In this project, we use ALMA data dedicated to FRB121102, which is the most famous ‘repeating’ FRB hosted by a galaxy at z~0.2. No clear detection of FRB counterparts has been reported to date. If the ALMA counterpart of FRB121102 is found through this project, it will have a significant impact on transient astronomy, e.g., it is worth submitting to Nature or Science journals. If the host galaxy is detected in the ALMA data, the origin will be constrained through a spectral distribution analysis of the FRB121102 host galaxy.