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Non-thermal gamma-ray emission in the Galactic Center region

Grant number: 22/04119-1
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): July 01, 2022
Effective date (End): March 31, 2024
Field of knowledge:Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
Principal Investigator:Aion da Escóssia Melo Viana
Grantee:Davi Bessa de Sousa
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


The region surrounding the center of our Galaxy is one of most complex and richest regions studied in high energy astrophysics harboring a variety of potential sources of high-energy radiation. Among these sources there is the closest supermassive black hole to Earth, 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 gamma-ray emission from the Galactic Ridge as seen by gamma-ray telescopes. 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 and model real data from the Fermi-LAT and H.E.S.S. telescopes of the Central Molecular Zone. After the successful implementation of this analysis to real data, the sensitivity of future observatories, such as the Southern Wide field-of-view Gamma-ray Observatory (SWGO) and the Cherenkov Telescope Array (CTA), to constraint different models of non-thermal gamma-ray emission in the Galactic Center region will be performed.

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