Magnetically Induced Anisotropies in the Arrival Directions of Ultra-high-energy Cosmic Rays from Nearby Radio Galaxies

Autor(es)

de Oliveira, Caina ^[1] ; de Souza, Vitor ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis Sao Carlos, Av Trabalhador Sao Carlense 400, Sao Carlos - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ASTROPHYSICAL JOURNAL; v. 925, n. 1 JAN 1 2022.
• Citações Web of Science: 0

Resumo

Detailed simulations of the arrival directions of ultra-high-energy cosmic rays are performed under the assumption of strong and structured extragalactic magnetic field (EGMF) models. Particles leaving Centaurus A, Virgo A, and Fornax A are propagated to Earth, and the simulated anisotropic signal is compared to the dipole and hotspots published by the Pierre Auger and Telescope Array Collaborations. The dominance of the EGMF structure in the arrival directions of events generated in local sources is shown. The absence of events from the Virgo A direction is related to the strong deviation caused by the EGMF. Evidence that these three sources contribute to an excess of events in the direction of the three detected hotspots is presented. Under the EGMF considered here, M82 is shown to have no contribution to the hotspot measured by the Telescope Array Observatory. (AU)

• Processo FAPESP: 19/10151-2 - Estudo de raios cósmicos de energias ultra-altas com o AugerPrime
• Beneficiário: Carola Dobrigkeit Chinellato
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais
• Processo FAPESP: 20/15453-4 - Mecanismos de produção de astropartículas ultra energéticas
• Beneficiário: Cainã de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Doutorado