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On the measurement of the helicity of intergalactic magnetic fields using ultra-high-energy cosmic rays

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Autor(es):
Batista, Rafael Alves ; Saveliev, Andrey
Número total de Autores: 2
Tipo de documento: Artigo Científico
Fonte: Journal of Cosmology and Astroparticle Physics; v. N/A, n. 3, p. 26-pg., 2019-03-01.
Resumo

The origin of the first magnetic fields in the Universe is a standing problem in cosmology. Intergalactic magnetic fields (IGMFs) may be an untapped window to the primeval Universe, providing further constrains on magnetogenesis. We demonstrate the feasibility of using ultra-high-energy cosmic rays (UHECRs) to constrain the helicity of IGMFs by performing simulations of cosmic-ray propagation in simple magnetic field con figurations. We show that the first harmonic moments of the arrival distribution of UHECRs may be used to measure the absolute value of the helicity and its sign. (AU)

Processo FAPESP: 17/12828-4 - Difusão, aceleração e propagação de raios cósmicos em ambientes astrofísicos turbulentos
Beneficiário:Rafael Alves Batista
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado