IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Investigating hadron acceleration in supernova remnants as revealed by their interaction with molecular clouds
Autor/es:
BURTON, M. G.; JORGE LEONARDO SUPÁN; SUPANITSKY, A. D.; CASTELLETTI, G.
Lugar:
San Pablo
Reunión:
Workshop; São Paulo School of Advanced Science on High Energy and Plasma Astrophysics in the CTA Era (SPSAS-HighAstro); 2017
Institución organizadora:
FAPESP
Resumen:
Observational evidence shows that supernova remnants (SNRs) are efficient particle accelerators. In fact, they are thought to be the main sources involved in the production of Galactic cosmic rays (mostly hadronic particles, with energies reaching the range of 10^15-10^16 eV/nucleon). However, this connection has not been unambiguously established to date. The detection of gamma-ray emission from molecular clouds (MCs) interacting with SNRs, or in their surroundings, has revealed the occurrence of high-energy processes in these systems. This energetic radiation may arise from the production and subsequent decay in gamma-rays of neutral pions produced after collisions of protons accelerated at SNR shocks with protons from the dense ambient gas. In this work, observational evidence of new SNR/MC-interacting systems correlated with gamma-ray sources at GeV and TeV energies is presented. Moreover, an analysis of the interstellar gas distribution towards known SNR/MC associations was carried out, in the light of new molecular gas data. A possible hadronic origin for the gamma-ray photons was investigated through the modeling of the spectral energy distribution of these systems.