Search for Small-Scale Anisotropy of Cosmic Rays above 10^19 eV with HiRes Stereo
arXiv:astro-ph/0408343 · doi:10.1016/j.nuclphysbps.2004.10.001
Abstract
We present the results of a search for small-scale anisotropy in the distribution of arrival directions of cosmic rays above 10^19 eV measured in stereo by the High Resolution Fly's Eye (HiRes) experiment. Performing an autocorrelation scan in energy and angular separation, we find that the strongest correlation signal in the HiRes stereo data set recorded between December 1999 and January 2004 is consistent with the null hypothesis of isotropically distributed arrival directions. These results are compared to previous claims of significant small-scale clustering in the AGASA data set.
6 pages, 4 figures; to appear in the proceedings of CRIS 2004, Catania, Italy, 31 May - 4 June 2004 (Nuclear Phys. B)
References in corpus (6)
- Ultra-High Energy Cosmic Rays in a Structured and Magnetized Universe
- On the statistical significance of the GZK feature in the spectrum of ultra high energy cosmic rays
- On the Evidence for Clustering in the Arrival Directions of AGASA's Ultrahigh Energy Cosmic Rays
- Indirect Detection of Kaluza-Klein Dark Matter
- Study of Small-Scale Anisotropy of Ultrahigh Energy Cosmic Rays Observed in Stereo by HiRes
- The clustering of ultra-high energy cosmic rays and their sources
Cited by in corpus (6)
- High-energy neutrinos in the context of multimessenger physics
- Ultrahigh Energy Nuclei Propagation in a Structured, Magnetized Universe
- A search for anisotropy in the arrival directions of ultra high energy cosmic rays recorded at the Pierre Auger Observatory
- Mapping the most energetic cosmic rays
- Search for Correlations between Nearby AGNs and Ultra-high Energy Cosmic Rays
- Uncovering neutrinos from cosmic ray factories: the Multi Point Source method