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Testing cosmology and fundamental physics with the Cherenkov Telescope Array

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Autor(es):
Martinez-Huerta, H. ; Biteau, J. ; Lefaucheur, J. ; Meyer, M. ; Pita, S. ; Vovk, I.
Número total de Autores: 6
Tipo de documento: Artigo Científico
Fonte: 36TH INTERNATIONAL COSMIC RAY CONFERENCE, ICRC2019; v. N/A, p. 8-pg., 2021-01-01.
Resumo

The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for gamma-ray astronomy at energies above 30 GeV. Thanks to its unique capabilities, CTA observations will address a plethora of open questions in astrophysics, ranging from the origin of cosmic messengers to the exploration of the frontiers of physics. In this note, we present a comprehensive sensitivity study to assess the potential of CTA to measure the gamma-ray absorption on the extragalactic background light (EBL), to constrain or detect intergalactic magnetic fields (IGMFs), and probe physics beyond the standard model such as axion-like particles (ALPs) and Lorentz invariance violation (LIV), which could modify the gamma-ray spectra features expected from EBL absorption. Our results suggest that CTA will have unprecedented sensitivity to detect IGMF signatures and will probe so-far unexplored regions of the LIV and ALP parameter space. Furthermore, an indirect measurement of the EBL and of its evolution will be performed with unrivaled precision. (AU)

Processo FAPESP: 15/15897-1 - Cherenkov Telescope Array - CTA
Beneficiário:Luiz Vitor de Souza Filho
Modalidade de apoio: Auxílio à Pesquisa - Temático
Processo FAPESP: 17/03680-3 - Teste de quebra da invariância de Lorentz com astropartículas
Beneficiário:Humberto Martínez Huerta
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado