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

Autor:	Campana, R., Massaro, E., Bocchino, F., Miceli, M., Orlando, S., Tramacere, A.
Rok vydání:	2022
Předmět:	Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Astrophysics of Galaxies
Druh dokumentu:	Working Paper
DOI:	10.1093/mnras/stac1875
Popis:	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. Comment: 14 pages, 4 figures. Accepted for publication in MNRAS
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2207.01272 Zobrazit plný text záznamu View this record from Arxiv