The X-Ray Binary Population with Fermi-LAT

TL;DR

This paper presents a large-scale survey of X-ray binary systems in the Milky Way using over 12 years of Fermi-LAT data to understand their gamma-ray emission mechanisms.

Contribution

It introduces a new method and provides an update on the status of a comprehensive survey of X-ray binaries with Fermi-LAT data.

Findings

Limited number of X-ray binaries detected in gamma-rays.

Method developed for large-scale analysis of Fermi-LAT data.

Insights into gamma-ray emission mechanisms of X-ray binaries.

Abstract

Binary star systems represent a significant proportion of the Galactic stellar population, with X-ray binaries being an important subset of these for high energy astrophysics. Although hundreds of X-ray binaries are detected in the Milky Way and beyond, only 12 of these systems are listed in the 4FGL-DR2, the latest Fermi-LAT point source catalogue. With such a small number detectable by Fermi-LAT, much is still unknown about the mechanisms by which these systems emit $\gamma$-rays. We present the method and current status of our large-scale survey of the X-ray binary population using over 12 years of Fermi-LAT data, and current catalogues and background models.