The Fermi Gamma Ray Sky: summary of recent Observations

TL;DR

The paper reviews recent discoveries from the Fermi Gamma-ray Space Telescope, highlighting new source catalogs and transient phenomena, significantly advancing our understanding of gamma-ray astrophysics over 13 years.

Contribution

It provides a comprehensive summary of recent gamma-ray observations, including new source catalogs and transient phenomena, enhancing knowledge of particle acceleration in astrophysical sources.

Findings

New gamma-ray source catalog released

Identification of key transient phenomena

Insights into particle acceleration mechanisms

Abstract

The Fermi Gamma-ray Space Telescope was launched more than 13 years ago and since then it has dramatically changed our knowledge of the gamma-ray sky. With more than three billions photons from the whole sky, collected in the energy range between 20 MeV and more than 300 GeV, and beyond 6,000 detected sources, LAT observations have been crucial to improving our understanding of particle acceleration and gamma-ray production in astrophysical sources. In this proceeding, I will review recent science highlights from the LAT. I will focus on the recent source catalog release, as well as on the main transient phenomena seen with the LAT with multi-wavelength and multi-messenger connection.