# Understanding the Engines and Progenitors of Gamma-Ray Bursts

## TL;DR

This paper reviews the evolution of our understanding of gamma-ray burst engines and progenitors, emphasizing recent gravitational wave detections and the importance of multi-messenger observations for future insights.

## Contribution

It provides a comprehensive review of the leading engines and potential progenitors of gamma-ray bursts, highlighting recent breakthroughs and future observational trends.

## Key findings

- Identification of 3 leading engines and 9 potential progenitors.
- Significance of multi-messenger observations in understanding GRBs.
- Predictions for high redshift burst observations based on nearby burst studies.

## Abstract

Our understanding of the engines and progenitors of gamma-ray bursts has expanded through the ages as a broader set of diagnostics has allowed us to test our understanding of these objects. Here we review the history of the growth in our understanding, focusing on 3 leading engines and 9 potential progenitors. The first gravitational wave detection of a short burst is the latest in a series of breakthrough observations shaping this understanding and we study the importance of multi-diagnostic, multi-messenger observations on these engines and their progenitors. Our understanding based on a detailed study of nearby bursts can be applied to make predictions for the trends expected as we begin to observe high redshift bursts and we discuss these trends.