The expansion of the GRB 221009A afterglow

S. Giarratana, O. S. Salafia, M. Giroletti +14

We observed $\gamma$-ray burst (GRB) 221009A using very long baseline interferomety (VLBI) with the European VLBI Network (EVN) and the Very Long Baseline Array (VLBA), over a period sp…