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arXiv · 2207.01272

High energy gamma-ray detection of supernova remnants in the Large Magellanic Cloud

R. Campana·E. Massaro·F. Bocchino·M. Miceli·S. Orlando·A. Tramacere
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Abstract

We present the results of a cluster search in the gamma-ray sky images of the Large Magellanic Cloud (LMC) region by means of the Minimum Spanning Tree (MST) and DBSCAN algorithms, at energies higher than 6 and 10 GeV, using 12 years of Fermi-LAT data. Several significant clusters were found, the majority of which associated with previously known gamma-ray sources. We confirm our previous detection of the Supernova Remnants N 49B and N 63A and found new significant clusters associated with the SNRs N 49, N 186D and N 44. These sources are among the brightest X-ray remnants in the LMC and corresponds to core-collapse supernovae interacting with dense HII regions, indicating that an hadronic origin of high energy photons is the most likely process.

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R. Campana, E. Massaro, F. Bocchino, M. Miceli, S. Orlando, A. Tramacere. 2022-07-04. High energy gamma-ray detection of supernova remnants in the Large Magellanic Cloud. https://doi.org/10.1093/mnras%2Fstac1875

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