| Full text | |
| Author(s): |
Hussain, Saqib
[1]
;
Batista, Rafael Alves
[2]
;
de Gouveia Dal Pino, Elisabete M.
[1]
;
Dolag, Klaus
[3, 4]
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Inst Astron Geophys & Atmospher Sci IAG, BR-05508090 Sao Paulo - Brazil
[2] Radboud Univ Nijmegen, Dept Astrophys IMAPP, NL-6500 GL Nijmegen - Netherlands
[3] Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85741 Garching - Germany
[4] Univ Observ Munich, Scheinerstr 1, D-81679 Munich - Germany
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Monthly Notices of the Royal Astronomical Society; v. 507, n. 2, p. 1762-1774, OCT 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
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. In this work, we compute the contribution from clusters of galaxies to the diffuse neutrino background. We employ 3D 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, including mass, magnetic field, temperature, and density. We propagate CRs in this environment using multidimensional Monte Carlo simulations across different redshifts (from z similar to 5 to z = 0), considering all relevant photohadronic, photonuclear, and hadronuclear interaction processes. We find that, for CRs injected with a spectral index alpha = 1.5-2.7 and cutoff energy E-max = 10(16)-5 x 10(17) eV, clusters contribute to a sizeable fraction to the diffuse flux observed by the IceCube Neutrino Observatory, but most of the contribution comes from clusters with M greater than or similar to 10(14) M-circle dot and redshift z less than or similar to 0.3. If we include the cosmological evolution of the CR sources, this flux can be even higher. (AU) | |
| FAPESP's process: | 17/12828-4 - Diffusion, acceleration and propagation of cosmic rays in turbulent astrophysical environments |
| Grantee: | Rafael Alves Batista |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 13/10559-5 - Investigation of high energy and plasma astrophysics phenomena: theory, numerical simulations, observations, and instrument development for the Cherenkov Telescope Array (CTA) |
| Grantee: | Elisabete Maria de Gouveia Dal Pino |
| Support Opportunities: | Special Projects |
| FAPESP's process: | 09/54006-4 - A computer cluster for the Astronomy Department of the University of São Paulo Institute of Astronomy, Geophysics and Atmospheric Sciences and for the Cruzeiro do Sul University Astrophysics Center |
| Grantee: | Elisabete Maria de Gouveia Dal Pino |
| Support Opportunities: | Multi-user Equipment Program |