Two blazars and the quest for soft-spectrum gamma-ray sources
Welcome to a seminar with Tomas Bylund, doctoral student in physics at Linnaeus University.
Title: Two blazars and the quest for soft-spectrum gamma-ray sources (half-way doctoral seminar) Lecturer: Tomas Bylund, doctoral student in physics in the Data Intensive Astroparticle Physics research group at Linnaeus University
Blazars are tremendously bright gamma ray sources in the sky, believed to be powered by the infall of gas, dust and stars onto supermassive black holes in the centre of galaxies. In this presentation, I will detail the process by which very high energy gamma rays from distant blazars were unambiguously detected using the HESS telescopes, and how this measurement allowed me to place constrains on their unknown distance.
I will also describe the development of a novel method to improve the performance of detection algorithms used in gamma ray astronomy, using the simulated data from the proposed ALTO observatory.