# Gamma-Ray Astrophysics in the Time Domain

## TL;DR

This paper reviews recent advances in gamma-ray time-domain astronomy, emphasizing the importance of variability analysis in understanding active galactic nuclei and their underlying physical processes.

## Contribution

It highlights key scientific issues and conceptual developments in gamma-ray timing studies of AGN, emphasizing new statistical tools and their potential to deepen source understanding.

## Key findings

- Gamma-ray variability spans from minutes to years.
- Statistical tools are crucial for analyzing gamma-ray source variability.
- Advances in gamma-ray timing can reveal insights into black hole and jet physics.

## Abstract

The last few years have seen gamma-ray astronomy maturing and advancing in the field of time-domain astronomy, utilizing source variability on timescales over many orders of magnitudes, from a decade down to a few minutes and shorter, depending on the source. This review focuses on some of the key science issues and conceptual developments concerning the timing characteristics of active galactic nuclei (AGN) at gamma-ray energies. It highlights the relevance of adequate statistical tools and illustrates that the developments in the gamma-ray domain bear the potential to fundamentally deepen our understanding of the nature of the emitting source and the link between accretion dynamics, black hole physics, and jet ejection.