Anti‐GZK Effect in Ultra–High‐Energy Cosmic Ray Diffusive Propagation | Zendy

Roberto Aloisio | Zendy; V. Berezinsky | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Anti‐GZK Effect in Ultra–High‐Energy Cosmic Ray Diffusive Propagation

Author(s) -

Roberto Aloisio,

V. Berezinsky

Publication year - 2005

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/429615

Subject(s) - physics , cosmic microwave background , intergalactic travel , cosmic ray , adiabatic process , astrophysics , ultra high energy cosmic ray , diffusion , jump , magnetic field , position (finance) , energy spectrum , energy (signal processing) , computational physics , optics , redshift , astronomy , galaxy , anisotropy , quantum mechanics , thermodynamics , finance , economics

We discuss the antiGZK effect in the diffusive propagation of ultra highenergy protons in intergalactic magnetic fields, which consists in a jump-likeincrease of the maximum distance from which ultra high energy protons can reachan observer. The position of this jump, $E_j \approx 2\times 10^{18}$ eV, isdetermined exclusively by energy losses (transition from adiabatic topair-production energy losses) and it is independent of the diffusionparameters. The diffuse spectrum presents a low-energy steepening approximatelyat this energy, which is very close to the position of the second knee observedin the cosmic ray spectrum. The dip, seen in the universal spectrum as asignature of the interaction with the cosmic microwave background radiation, isalso present in the case of diffusive propagation in magnetic fields.Comment: 19 pages, 8 figures, a typo correcte

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research