A Radio Flare in the Long-Lived Afterglow of the Distant Short GRB 210726A: Energy Injection or a Reverse Shock from Shell Collisions?

Genevieve Schroeder, Lauren Rhodes, Tanmoy Laskar +32

We present the discovery of the radio afterglow of the short ${\hat{I}}^3$-ray burst (GRB) 210726A, localized to a galaxy at a photometric redshift of $z\sim 2.4$. While radio observations…