Fig. 3: Tracking the evolution of the peak frequency and time of the reverse shock in GRB 221009A.
From: Precise measurements of self-absorbed rising reverse shock emission from gamma-ray burst 221009A

The evolving frequency of, and flux density at, the early-time peak in our radio light curves of GRB 221009A. It can be seen to move to lower frequencies and flux densities with time. The peak flux density evolves as Fν,sa ∝ t−0.70±0.02 (shown as a dashed black line). The synchrotron self-absorption frequency evolves as νsa ∝ t−1.08±0.04 (shown as a dashed red line). Error bars represent 1σ uncertainties.