High Energy Transients

TL;DR

This paper reviews the evolution and recent discoveries of high energy transients in astrophysics, emphasizing new phenomena found by Fermi and Swift that challenge existing understanding.

Contribution

It provides a comprehensive overview of high energy transients, highlighting recent unexpected discoveries and their implications for future research.

Findings

Discovery of new gamma-ray transients

Identification of unclassifiable or challenging phenomena

Emphasis on the need for future detailed studies

Abstract

We present an overview of high energy transients in astrophysics, highlighting important advances over the past 50 years. We begin with early discoveries of gamma-ray transients, and then delve into physical details associated with a variety of phenomena. We discuss some of the unexpected transients found by Fermi and Swift, many of which are not easily classifiable or in some way challenge conventional wisdom. These objects are important insofar as they underscore the necessity of future, more detailed studies.