2023/04/29 by B. M. Mese, Mese, B. M., T. Ergin +1
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Radio Astronomy Observations and Technology #Gamma-ray bursts and supernovae
paper · pdf · doi:10.48550/arxiv.2305.00209
Recently the Galactic and Extra-galactic All-sky Murchison Widefield Array survey has published 27 new candidate radio supernova remnants (SNRs) which are located within the longitude ranges of 345° < l < 60° and 180° < l < 240°. To search for the gamma-ray counterparts of these candidate radio SNRs, we analyzed 14 years of \it Fermi-LAT data in the energy range of 1 - 300 GeV. There are three promising SNRs; G18.9-1.2, G23.1+0.1, and G28.3+0.2, which we detected at a significance level of ∼9σ, ∼13σ, and ∼12σ, respectively. Here we report the results of our morphological and spectral analyses of G18.9-1.2, G23.1+0.1, and G28.3+0.2. No extended gamma-ray emission is detected for any of these SNRs. Our analysis of the 3 SNRs' \it Fermi-LAT gamma-ray emission showed that their best-fit positions (if assumed point-like) overlap with the locations of the corresponding GLEAM counterparts.