TY - JOUR

T1 - Caustic-Like Structures in UHECR Flux after Propagation in Turbulent Intergalactic Magnetic Fields

AU - Dolgikh, K.

AU - Korochkin, A.

AU - Rubtsov, G.

AU - Semikoz, D.

AU - Tkachev, I.

N1 - Work of K.D., A.K., G.R. and I.T. was supported by the Russian Science Foundation grant 20-42-09010. The work of D.S. has been supported by the French National Research Agency (ANR) grant ANR-19-CE31-0020. Some of the results in this paper have been derived using the healpy and HEALPix packages. Публикация для корректировки.

PY - 2023/6

Y1 - 2023/6

N2 - UHECR propagation in a turbulent intergalactic magnetic field in the small-angle scattering regime is well understood for propagation distances much larger than the field coherence scale. The diffusion theory doesn’t work and unexpected effects may appear for propagation over smaller distances, from a few and up to 10–20 coherence scales. We study the propagation of UHECRs in this regime, which may be relevant for intermediate mass UHECR nuclei and nG scale intergalactic magnetic fields with 1 Mpc coherence scale. We found that the trajectories form a non-trivial caustic-like pattern with strong deviation from isotropy. Thus, measurements of the flux from a source at a given distance will depend on the position of the observer.

AB - UHECR propagation in a turbulent intergalactic magnetic field in the small-angle scattering regime is well understood for propagation distances much larger than the field coherence scale. The diffusion theory doesn’t work and unexpected effects may appear for propagation over smaller distances, from a few and up to 10–20 coherence scales. We study the propagation of UHECRs in this regime, which may be relevant for intermediate mass UHECR nuclei and nG scale intergalactic magnetic fields with 1 Mpc coherence scale. We found that the trajectories form a non-trivial caustic-like pattern with strong deviation from isotropy. Thus, measurements of the flux from a source at a given distance will depend on the position of the observer.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85164701632&origin=inward&txGid=03ab624eb5375d05b78e07d2008515cd

UR - https://www.mendeley.com/catalogue/f1ea2767-b2c6-3bf5-ad08-c9a2b117e79f/

U2 - 10.1134/S1063776123060031

DO - 10.1134/S1063776123060031

M3 - Article

VL - 136

SP - 704

EP - 710

JO - Journal of Experimental and Theoretical Physics

JF - Journal of Experimental and Theoretical Physics

SN - 1063-7761

IS - 6

ER -