13–16 Jun 2023
America/Sao_Paulo timezone

Compact central object as source of high energy cosmic rays

Not scheduled
20m

Speaker

Luana Natalie Padilha (Universidade Estadual de Londrina)

Description

The origin and acceleration mechanisms of energetic particles in the universe remain enigmatic in contemporary astrophysics. Recent efforts have focused on identifying galactic sources capable of accelerating particles to 1 PeV, known as PeVatrons. The different morphology of galactic supernova remnants is directly related to the type of stellar explosion and the existence of a possible Compact Central Object (CCO), which possess intense radiative-gravitational fields on their surfaces. These CCOs, due to their strong fields and interactions with surrounding magnetic clouds, are potential candidates for cosmic ray production. Through observations of the compact X-ray source 1E 1207.4-5209, located near the remnant G296.5+10.0, we analyze the emission of high-energy gamma rays (E > 100 GeV) resulting from cosmic-ray acceleration and propagation. Additionally, we calculate the contribution of this association to the overall observed Galactic cosmic ray flux,considering cosmic ray propagation within the Galaxy, including energy losses and particle interactions. Our findings suggest that this setup offers a fertile environment for the production of a wide range of cosmic ray energies, from GeV to TeV, extending up to PeV, within the Galaxy. Leveraging the enhanced capabilities of the latest GALPROP software, we achieve compelling results in our investigation.

Author

Luana Natalie Padilha (Universidade Estadual de Londrina)

Co-authors

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