Effect of systematic uncertainties in the search of galactic cosmic ray accelerators with CTA

Stage numéro : M1-1819-CT-01
Laboratoire :Centre de Physique des Particules de Marseille Case 902
 163 avenue de Luminy - 13288 Marseille Cedex 9
Directeur :Cristinel Diaconu - - diaconu@cppm.in2p3.fr
Correspondant :William Gillard - - gillard@cppm.in2p3.fr
Groupe d'accueil :HESS-CTA
Chef de groupe :Heide Costantini - costantini@cppm.in2p3.fr
Responsable de stage :Franca Cassol - 0491827248 - cassol@cppm.in2p3.fr

Thématique : Astroparticules

Cherenkov Telescope Array (CTA) is a worldwide project to construct the next generation ground based very-high-energy gamma-ray instrument. CTA will provide an unprecedented insight into the VHE Universe and in particular will explore the energy region above few tens of TeV for the first time. One of the main goals of CTA is the understanding of the origin of galactic cosmic rays. Astrophysical sources emitting gammas at energies above 50 TeV are very good candidates for cosmic ray accelerators at PeV energies (PeVatrons).

The CPPM group has started since few years to work on the potentiality of CTA in detecting PeVatrons and is also working on the energy calibration of the telescopes.

The internship project will focus on the estimation of the effect of systematic uncertainties coming from the calibration accuracy of the instrument on the potentiality of detecting PeVatrons with CTA.

The method to identify potential PeVatrons candidates during the the galactic survey relies on the accurate spectral analysis of the source. The effect of the uncertainties on the energy estimation and detection efficiency will be evaluated to improve the robustness of the PeVatrons selection criteria.