Seminario CAPA: "Measuring Lorentz invariance violation with Cherenkov telescopes - from observations to setting constraints".- Jueves 12 de mayo
El jueves 12 de mayo tendrá lugar la conferencia, dentro del Seminario CAPA, que impartirá Tomislav Terzi? (Department of Physics, University of Rijeka, Croatia). Se titula "Measuring Lorentz invariance violation with Cherenkov telescopes - from observations to setting constraints".
Esta conferencia tendrá lugar en el Seminario de Física Nuclear (Edificio A, Física) a las 12.00 h y podréis seguirla también online a través del código QR del cartel.
Abstract
Cherenkov telescopes are instruments optimized for detection of very high energy (VHE, E > 100 GeV) gamma rays from astrophysics sources. They play a crucial role in testing possible consequences of Quantum Gravity (QG), such as violation or deformation of Lorentz symmetry. In both cases, the photon dispersion relation is modified, making the photon group velocity energy dependent, and possibly modifying kinematics and dynamics of electromagnetic interactions. These tiny effects are vastly below the sensitivity of present-day laboratories. However, if real, they could be measured using VHE gamma rays of astrophysical origin. Cosmological distances that they cross serve as a natural amplifier for the QG effects.
While no deviations from the special relativistic predictions have been detected, strong constraints have been set on modified photon dispersion relations. In this session we will explain the process of testing implications of modified photon dispersion relations on VHE gamma rays using Cherenkov telescopes. We will cover different stages from observations, Cherenkov telescopes’ data analysis, statistical methods employed, and finally setting constraints on the QG energy scale.
