Abstract
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 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' Fermi-LAT gamma-ray emission showed that their best-fit positions (if assumed point-like) overlap with the locations of the corresponding GLEAM counterparts.
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