Multi-wavelength studies of very-high-energy extra-galactic sources

SNIC 2019/3-677


SNIC Medium Compute

Principal Investigator:

Yvonne Becherini



Start Date:


End Date:


Primary Classification:

10305: Astronomy, Astrophysics and Cosmology



The aim of the proposed project is to provide computing power to our new research group in extragalactic astrophysics analysis at Linnéuniversitetet (LnU). LnU participates to two of the main very-high-energy (VHE) cosmic gamma-ray projects: the High Energy Stereoscopic System (H.E.S.S.) and the Cherenkov Telescope Array (CTA). Our research field in VHE astronomy is mainly experimental/phenomenological with a strong focus on data analysis at all wavelengths and on the interpretation of data of extragalactic sources. Extragalactic sources give the possibility to work with a complete laboratory of cosmic-ray physics, astrophysics and fundamental physics, as with their help we can investigate where and how cosmic rays are accelerated and, more generally, we can study what are the acceleration mechanisms involved. The analysis part of the program will be performed with both public data and with proprietary data. Public data provided by Swift, NuStar and Fermi satellites will be analyzed and associated with the VHE data provided by the H.E.S.S. experiment with the aim of understanding the overall emission from the observed extragalactic sources. We also actively participate to the analysis of the Fermi-LAT data. From 2014 we are involved also in a new project aiming to the construction of a high-altitude wide-field observatory called ALTO. We thus now need resources also for simulations with Corsika and Geant4 for the optimisation of the experiment.