| Speaker: | Mariana Orellana (Universidad Nacional de Río Negro) |
|---|---|
| Title: | Investigations on photon-pair cascades from nearby blazars |
| Date (JST): | Thu, Feb 19, 2015, 13:30 - 14:30 |
| Place: | Seminar Room A |
| Abstract: | It has been established that the Extragalactic Background Light (optical to infrared wavelengths) attenuates the very high-energy emission from blazars through the process of electron-positron pair production. These pairs are deflected by the Extragalactic Magnetic Field (EGMF) and cooled down by Inverse Compton scattering with the CMB photons. According to the EGMF strength an electromagnetic cascade may develop, and through it the originally emitted spectrum, the source extent and the arriving time of the photons are modified. In order to study this problem we assume some simplifications allowing to track the three-dimensional trajectories of each particle and photon on the cascade. Here I report on the status of our numerical simulations regarding the gamma-ray propagation along 100 Mpc scales. |
