Study of Small-Scale Anisotropy of Ultra-High-Energy Cosmic Rays Observed in Stereo by the High Resolution Fly's Eye Detector | Zendy

Rasha Abbasi | Zendy; T. AbuZayyad | Zendy; J. F. Amann | Zendy; G. Archbold | Zendy; R. Atkins | Zendy; Jose A. Bellido | Zendy; K. Belov | Zendy; J. W. Belz | Zendy; S. BenZvi | Zendy; D. R. Bergman | Zendy; J. Boyer | Zendy; G. W. Burt | Zendy; Zhen Cao | Zendy; R. W. Clay | Zendy; B. Connolly | Zendy; B. R. Dawson | Zendy; Wenyu Deng | Zendy; Y. Fedorova | Zendy; J. Findlay | Zendy; C. Finley | Zendy; W. Hanlon | Zendy; C. M. Hoffman | Zendy; M. H. Holzscheiter | Zendy; G.A. Hughes | Zendy; P. Hüntemeyer | Zendy; C. C. H. Jui | Zendy; K. Kim | Zendy; M. Kirn | Zendy; B. Knapp | Zendy; E. C. Loh | Zendy; M. M. Maestas | Zendy; Naohiro Manago | Zendy; E. J. Mannel | Zendy; Lukáš Marek | Zendy; K. Martens | Zendy; J. A. J. Matthews | Zendy; J. N. Matthews | Zendy; A. O’Neill | Zendy; C. A. Painter | Zendy; L. Perera | Zendy; K. Reil | Zendy; R. Riehle | Zendy; M. S. Roberts | Zendy; M. Sasaki | Zendy; S. Schnetzer | Zendy; M. Seman | Zendy; K. M. Simpson | Zendy; G. Sinnis | Zendy; J. D. Smith | Zendy; R. Snow | Zendy; P. Sokolsky | Zendy; C. Song | Zendy; R. W. Springer | Zendy; B. T. Stokes | Zendy; J. R. Thomas | Zendy; S. B. Thomas | Zendy; G. B. Thomson | Zendy; D. Tupa | Zendy; S. Westerhoff | Zendy; L. R. Wiencke | Zendy; A. Zech | Zendy

Open Access

Study of Small-Scale Anisotropy of Ultra-High-Energy Cosmic Rays Observed in Stereo by the High Resolution Fly's Eye Detector

Author(s) -

Rasha Abbasi,

T. AbuZayyad,

J. F. Amann,

G. Archbold,

R. Atkins,

Jose A. Bellido,

K. Belov,

J. W. Belz,

S. BenZvi,

D. R. Bergman,

J. Boyer,

G. W. Burt,

Zhen Cao,

R. W. Clay,

B. Connolly,

B. R. Dawson,

Wenyu Deng,

Y. Fedorova,

J. Findlay,

C. Finley,

W. Hanlon,

C. M. Hoffman,

M. H. Holzscheiter,

G.A. Hughes,

P. Hüntemeyer,

C. C. H. Jui,

K. Kim,

M. Kirn,

B. Knapp,

E. C. Loh,

M. M. Maestas,

Naohiro Manago,

E. J. Mannel,

Lukáš Marek,

K. Martens,

J. A. J. Matthews,

J. N. Matthews,

A. O’Neill,

C. A. Painter,

L. Perera,

K. Reil,

R. Riehle,

M. S. Roberts,

M. Sasaki,

S. Schnetzer,

M. Seman,

K. M. Simpson,

G. Sinnis,

J. D. Smith,

R. Snow,

P. Sokolsky,

C. Song,

R. W. Springer,

B. T. Stokes,

J. R. Thomas,

S. B. Thomas,

G. B. Thomson,

D. Tupa,

S. Westerhoff,

L. R. Wiencke,

A. Zech

Publication year - 2004

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 - 10.1086/423303

Subject(s) - angular resolution (graph drawing) , cosmic ray , detector , physics , anisotropy , resolution (logic) , cosmic cancer database , ultra high energy cosmic ray , astrophysics , optics , scale (ratio) , energy (signal processing) , high resolution , remote sensing , geology , computer science , mathematics , combinatorics , artificial intelligence , quantum mechanics

The High Resolution Fly's Eye (HiRes) experiment is an air fluorescencedetector which, operating in stereo mode, has a typical angular resolution of0.6 degrees and is sensitive to cosmic rays with energies above 10^18 eV. HiResis thus an excellent instrument for the study of the arrival directions ofultrahigh energy cosmic rays. We present the results of a search foranisotropies in the distribution of arrival directions on small scales (<5degrees) and at the highest energies (>10^19 eV). The search is based on datarecorded between 1999 December and 2004 January, with a total of 271 eventsabove 10^19 eV. No small-scale anisotropy is found, and the strongestclustering found in the HiRes stereo data is consistent at the 52% level withthe null hypothesis of isotropically distributed arrival directions.Comment: 4 pages, 3 figures. Matches accepted ApJL versio

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