# A detailed radio study of the energetic, nearby and puzzling GRB 171010A

## TL;DR

This paper presents a comprehensive radio observation campaign of GRB 171010A, analyzing its spectral and temporal evolution, and discusses challenges to standard models including reverse shocks and microphysical changes.

## Contribution

It provides detailed multi-epoch radio data on GRB 171010A and explores deviations from canonical afterglow models, considering additional physical effects.

## Key findings

- Spectral evolution generally agrees with canonical models
- Evidence suggests possible reverse shock component
- Discrepancies may be due to microphysical parameter evolution or scintillation effects

## Abstract

We present the results of an intensive multi-epoch radio frequency campaign on the energetic and nearby GRB 171010A with the Karl G. Janksy Very Large Array and Arcminute Microkelvin Imager Large Array. We began observing GRB 171010A a day after its initial detection, and were able to monitor the temporal and spectral evolution of the source over the following weeks. The spectra and their evolution are compared to the canonical theories for broadband GRB afterglows, with which we find a general agreement. There are, however, a number of features that are challenging to explain with a simple forward shock model, and we discuss possible reasons for these discrepancies. This includes the consideration of the existence of a reverse shock component, potential microphysical parameter evolution and the effect of scintillation.