LBA observations for project V603 semester 2024APRS

The energetics and central engines of Fast Radio Bursts (FRBs) are still mysterious, and it is unclear whether the subset of repeating FRBs are a function of their host environments or form an entirely different source class. Characteristics of the Persistent Radio Source (PRS) and its relation to FRB provide crucial clues to FRB origin and surrounding environment. We propose multi-epoch sensitive VLBI observations of one of the only two repeating FRBs with confirmed compact PRS counterparts, namely FRB 190520, using the LBA combined with Chinese radio telescopes including FAST. The monitoring VLBI observations can reveal possible variability in location, physical size and flux of both FRB and its PRS, which allow us to distinguish models of FRB origin and offer a clue to their possible evolution.