| Texto completo | |
| Autor(es): |
Hussain, Saqib
;
Batista, Rafael Alves
;
Dal Pino, Elisabete de Gouveia
;
Dolag, Klaus
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | 2022 25TH INTERNATIONAL CONFERENCE ON INFORMATION FUSION (FUSION 2022); v. N/A, p. 8-pg., 2022-01-01. |
| Resumo | |
In this work we compute the contribution from clusters of galaxies to the diffuse neutrino background. Clusters of galaxies can potentially produce cosmic rays (CRs) up to very-high energies via large-scale shocks and turbulent acceleration. Due to their unique magnetic-field configuration, CRs with energy <= 10(17) eV can be trapped within these structures over cosmological time scales, and generate secondary particles, including neutrinos and gamma rays, through interactions with the background gas and photons. We employ three-dimensional cosmological magnetohydrodynamical simulations of structure formation to model the turbulent intergalactic medium. We use the distribution of clusters within this cosmological volume to extract the properties of this population. We propagate CRs in this environment using multi-dimensional Monte Carlo simulations across different redshifts (from z similar to 5 to z = 0), considering all relevant photohadronic, photonuclear, and hadronuclear interactions. We also include the cosmological evolution of the CR sources. We find that, for CRs injected with a spectral index 1.5 - 2 .7 and cutoff energy E-max = 10(16) - 10(17) eV, clusters contribute to a substantial fraction to the diffuse flux observed by the IceCube Neutrino Observatory, and most of the contribution comes from clusters with M > 10(14) M-circle dot and redshift Z < 0.3. (AU) | |
| Processo FAPESP: | 13/10559-5 - Investigação de fenômenos de altas energias e plasmas astrofísicos: teoria, simulações numéricas, observações e desenvolvimento de instrumentação para o Cherenkov Telescope Array (CTA) |
| Beneficiário: | Elisabete Maria de Gouveia Dal Pino |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |
| 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 |