SIMBAD references

2008ApJ...676..807C - Astrophys. J., 676, 807-815 (2008/April-1)

Clustering properties of Ultra-High-Energy cosmic rays and the search for their astrophysical sources.

CUOCO A., HANNESTAD S., HAUGBOLLE T., KACHELRIESS M. and SERPICO P.D.

Abstract (from CDS):

The arrival directions of ultra-high-energy cosmic rays (UHECRs) may show anisotropies on all scales, from just above the experimental angular resolution up to medium scales and dipole anisotropies. We find that a global comparison of the two-point autocorrelation function of the data with that of catalogs of potential sources is a powerful diagnostic tool. In particular, this method is far less sensitive than cross-correlation studies to unknown deflections in magnetic fields while keeping a strong discrimination power among source candidates. We illustrate these advantages by considering ordinary galaxies, gamma-ray bursts, and active galactic nuclei as possible sources. Already the sparse publicly available data suggest that the sources of UHECRs may be a strongly clustered subsample of galaxies or of active galactic nuclei. We present forecasts for various cases of source distributions which can be checked soon with the Pierre Auger Observatory.

Abstract Copyright:

Journal keyword(s): Galaxies: BL Lacertae Objects: General - ISM: Cosmic Rays - Galaxies: Active - Galaxies: Seyfert - Cosmology: Large-Scale Structure of Universe - Methods: Statistical

Simbad objects: 2

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2019.10.15-07:18:38

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