Artículos de revistas
Detection of a new, low-brightness supernova remnant possibly associated with EGRET sources
Fecha
2001-02Registro en:
Benaglia, Paula; Romero, Gustavo Esteban; Combi, Jorge Ariel; Jonas, J. L.; Detection of a new, low-brightness supernova remnant possibly associated with EGRET sources; EDP Sciences; Astronomy and Astrophysics; 366; 2-2001; 1047-1052
0004-6361
CONICET Digital
CONICET
Autor
Combi, Jorge Ariel
Romero, Gustavo Esteban
Benaglia, Paula
Jonas, J. L.
Resumen
We report on the discovery of a shell-type supernova remnant in the southern sky. It is a large (∼8◦×8◦), low-brightness source with a nonthermal radio spectrum, which requires background filtering to isolate it from the diffuse background emission of the Galaxy. Three 3EG γ-ray sources are spatially correlated with the radio structure. We have made 21-cm line observations of the region and found that two of these sources are coincident with HI clouds. We propose that the γ-ray emission is the result of hadronic interactions between high-energy protons locally accelerated at the remnant shock front and atomic nuclei in the ambient clouds