IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Extended gamma-ray emission from blazars: prospect of detection with future Cherenkov telescopes
Autor/es:
M. FERNANDEZ ALONSO, A.D. SUPANITSKY, A.C. ROVERO
Lugar:
Córdoba
Reunión:
Congreso; 57 Reunión Anual de la Asociación Argentina de Astronomía; 2014
Resumen:
Very high energy (VHE >100 GeV) gamma rays coming from blazars can produce pairs when interacting with the Extragalactic Backround Light (EBL), generating an electromagnetic cascade. Depending on the Intergalactic Magnetic Field (IGMF) intensity, this cascade may result in an extended isotropic emission of photons around the source (halo), or in a broadening of the emission beam. The detection of these effects may lead to important constrains both on the IGMF intensity and the EBL density, quantities of great relevance in cosmological models. We use Monte Carlo simulations of these cascades to built the angular and spectral distributions of photons coming from a source at a given redshift. We base our input photon distribution in the spectrum of 1ES0229 (z=0.14) and develop a method to study the feasibility of detecting the effect, assuming a simplified model for a future Cherenkov telescope system.