A New Gamma-Ray Source in the Vicinity of the Galactic Supernova Remnant G306.3$-$0.9

TL;DR

This paper reports the discovery of a new gamma-ray source near the supernova remnant G306.3-0.9, using Fermi-LAT data, and presents follow-up Swift X-ray observations to investigate its nature.

Contribution

The study identifies a new extended gamma-ray source near a supernova remnant and provides multi-wavelength follow-up observations to explore its characteristics.

Findings

Detection of Source A with ~13σ significance in gamma-rays.

Preliminary Swift X-ray observations support multi-wavelength analysis.

Initial gamma-ray analysis results are presented.

Abstract

A new extended gamma-ray source, which was named as Source A, in the southwest of Galactic supernova remnant (SNR) G306.3$-$0.9 was detected with a significance of $\sim$13$\sigma$ at the location of R.A. (J2000) = 13$^{\rm{h}}$ 17$^{\rm{m}}$ 52$^{\rm{s}\!\!}$.80, Decl. (J2000) = $-$63$^{\circ}$ 55$'$ 48$"\!\!$.00 using about 9 years of Fermi-LAT data. In order to investigate this unidentified gamma-ray source in multi-wavelengths, we performed Swift observations of Source A. In this presentation we summarize the published gamma-ray results, report about the recent ToO Swift observations of Source A, and show our preliminary results of the gamma-ray analysis that we conducted using the new X-ray data.