Radiative model reconstruction of gamma-rays sources in the Galactic Center region

• Grant number: 21/03532-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: May 01, 2021
• End date: December 31, 2021
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Aion da Escóssia Melo Viana
• Grantee: Daniel Cecchin Momesso
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 19/14893-3 - Extreme phenomena of the Galactic Center and indirect searches of dark matter with gamma rays, AP.JP

Abstract

Among all the high-energy environments of our Galaxy, the Galactic Center region is definitely the richest. It harbours a large amount of high-energy emitters, including the closest supermassive black hole, a cosmic Pevatron, dense molecular clouds, strong star-forming activity, multiple supernova remnants and pulsar wind nebulae, arc-like radio structures, as well as the base of what may be large-scale galactic outflows. This project aims to reconstruct the radiative models that can explain the non-thermal emission of a selection of gamma-ray sources in the Galactic Center region. Special attention will be given to the learning of advanced astronomical softwares to handle gamma-ray data, such as Astropy, Gammapy, CTools, and numerical libraries that can generate non-thermal radiation from a population of relativistic particle, such as Naima or Gamera. These softwares will be used to analyze data from the Fermi-LAT and H.E.S.S. telescopes of sources in the Galactic Center region. Radiative models will be fitted to the gamma-ray spectra in order to recover the primary cosmic-ray energy distribution of these sources. The main objective of the proposed activity is to introduce the student to the context of research, by means of the study of non-thermal high-energy astrophysical phenomena and numerical calculations in astrophysics.