Search for point sources of ultra-high-energy cosmic rays above 4.0 × 1019 eV using a maximum likelihood ratio test

R. U. Abbasi; T. Abu-Zayyad; J. F. Amann; G. Archbold; R. Atkins; J. A. Bellido; K. Belov; J. W. Betz; S. Y. Ben-Zvi; D. R. Bergman; J. H. Boyer; G. W. Burt; Z. Cao; R. W. Clay; B. M. Connolly; B. R. Dawson; W. Deng; G. R. Farrar; Y. Fedorova; J. Findlay; C. B. Finley; W. F. Hanlon; C. M. Hoffman; M. H. Holzscheiter; G. A. Hughes; P. Hüntemeyer; C. C.H. Jui; K. Kim; M. A. Kirn; B. C. Knapp; E. C. Loh; M. M. Maestas; N. Manago; E. J. Mannel; L. J. Marek; K. Martens; J. A.J. Matthews; J. N. Matthews; A. O'Neill; C. A. Painter; L. Perera; K. Reil; R. Riehle; M. D. Roberts; M. Sasaki; S. R. 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

doi:10.1086/428570

Search for point sources of ultra-high-energy cosmic rays above 4.0 × 10¹⁹ eV using a maximum likelihood ratio test

R. U. Abbasi, T. Abu-Zayyad, J. F. Amann, G. Archbold, R. Atkins, J. A. Bellido, K. Belov, J. W. Betz, S. Y. Ben-Zvi, D. R. Bergman, J. H. Boyer, G. W. Burt, Z. Cao, R. W. Clay, B. M. Connolly, B. R. Dawson, W. Deng, G. R. Farrar, Y. Fedorova, J. FindlayC. B. Finley, W. F. Hanlon, C. M. Hoffman, M. H. Holzscheiter, G. A. Hughes, P. Hüntemeyer, C. C.H. Jui, K. Kim, M. A. Kirn, B. C. Knapp, E. C. Loh, M. M. Maestas, N. Manago, E. J. Mannel, L. J. Marek, K. Martens, J. A.J. Matthews, J. N. Matthews, A. O'Neill, C. A. Painter, L. Perera, K. Reil, R. Riehle, M. D. Roberts, M. Sasaki, S. R. 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

Research output: Contribution to journal › Article › peer-review

Abstract

We present the results of a search for cosmic-ray point sources at energies in excess of 4.0 × 10¹⁹ eV in the combined data sets recorded by the Akeno Giant Air Shower Array and High Resolution Fly's Eye stereo experiments. The analysis is based on a maximum likelihood ratio test using the probability density function for each event rather than requiring an a priori choice of a fixed angular bin size. No statistically significant clustering of events consistent with a point source is found.

Original language	English (US)
Pages (from-to)	164-170
Number of pages	7
Journal	Astrophysical Journal
Volume	623
Issue number	1 I
DOIs	https://doi.org/10.1086/428570
State	Published - Apr 10 2005

Keywords

Acceleration of particles
Cosmic rays
Large-scale structure of universe

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/428570

Cite this

Abbasi, R. U., Abu-Zayyad, T., Amann, J. F., Archbold, G., Atkins, R., Bellido, J. A., Belov, K., Betz, J. W., Ben-Zvi, S. Y., Bergman, D. R., Boyer, J. H., Burt, G. W., Cao, Z., Clay, R. W., Connolly, B. M., Dawson, B. R., Deng, W., Farrar, G. R., Fedorova, Y., ... Zech, A. (2005). Search for point sources of ultra-high-energy cosmic rays above 4.0 × 10¹⁹ eV using a maximum likelihood ratio test. Astrophysical Journal, 623(1 I), 164-170. https://doi.org/10.1086/428570

Search for point sources of ultra-high-energy cosmic rays above 4.0 × 10¹⁹ eV using a maximum likelihood ratio test. / Abbasi, R. U.; Abu-Zayyad, T.; Amann, J. F.; Archbold, G.; Atkins, R.; Bellido, J. A.; Belov, K.; Betz, J. W.; Ben-Zvi, S. Y.; Bergman, D. R.; Boyer, J. H.; Burt, G. W.; Cao, Z.; Clay, R. W.; Connolly, B. M.; Dawson, B. R.; Deng, W.; Farrar, G. R.; Fedorova, Y.; Findlay, J.; Finley, C. B.; Hanlon, W. F.; Hoffman, C. M.; Holzscheiter, M. H.; Hughes, G. A.; Hüntemeyer, P.; Jui, C. C.H.; Kim, K.; Kirn, M. A.; Knapp, B. C.; Loh, E. C.; Maestas, M. M.; Manago, N.; Mannel, E. J.; Marek, L. J.; Martens, K.; Matthews, J. A.J.; Matthews, J. N.; O'Neill, A.; Painter, C. A.; Perera, L.; Reil, K.; Riehle, R.; Roberts, M. D.; Sasaki, M.; Schnetzer, S. R.; Seman, M.; Simpson, K. M.; Sinnis, G.; Smith, J. D.; Snow, R.; Sokolsky, P.; Song, C.; Springer, R. W.; Stokes, B. T.; Thomas, J. R.; Thomas, S. B.; Thomson, G. B.; Tupa, D.; Westerhoff, S.; Wiencke, L. R.; Zech, A.

In: Astrophysical Journal, Vol. 623, No. 1 I, 10.04.2005, p. 164-170.

Research output: Contribution to journal › Article › peer-review

Abbasi, RU, Abu-Zayyad, T, Amann, JF, Archbold, G, Atkins, R, Bellido, JA, Belov, K, Betz, JW, Ben-Zvi, SY, Bergman, DR, Boyer, JH, Burt, GW, Cao, Z, Clay, RW, Connolly, BM, Dawson, BR, Deng, W, Farrar, GR, Fedorova, Y, Findlay, J, Finley, CB, Hanlon, WF, Hoffman, CM, Holzscheiter, MH, Hughes, GA, Hüntemeyer, P, Jui, CCH, Kim, K, Kirn, MA, Knapp, BC, Loh, EC, Maestas, MM, Manago, N, Mannel, EJ, Marek, LJ, Martens, K, Matthews, JAJ, Matthews, JN, O'Neill, A, Painter, CA, Perera, L, Reil, K, Riehle, R, Roberts, MD, Sasaki, M, Schnetzer, SR, Seman, M, Simpson, KM, Sinnis, G, Smith, JD, Snow, R, Sokolsky, P, Song, C, Springer, RW, Stokes, BT, Thomas, JR, Thomas, SB, Thomson, GB, Tupa, D, Westerhoff, S, Wiencke, LR & Zech, A 2005, 'Search for point sources of ultra-high-energy cosmic rays above 4.0 × 10¹⁹ eV using a maximum likelihood ratio test', Astrophysical Journal, vol. 623, no. 1 I, pp. 164-170. https://doi.org/10.1086/428570

Abbasi, R. U. ; Abu-Zayyad, T. ; Amann, J. F. ; Archbold, G. ; Atkins, R. ; Bellido, J. A. ; Belov, K. ; Betz, J. W. ; Ben-Zvi, S. Y. ; Bergman, D. R. ; Boyer, J. H. ; Burt, G. W. ; Cao, Z. ; Clay, R. W. ; Connolly, B. M. ; Dawson, B. R. ; Deng, W. ; Farrar, G. R. ; Fedorova, Y. ; Findlay, J. ; Finley, C. B. ; Hanlon, W. F. ; Hoffman, C. M. ; Holzscheiter, M. H. ; Hughes, G. A. ; Hüntemeyer, P. ; Jui, C. C.H. ; Kim, K. ; Kirn, M. A. ; Knapp, B. C. ; Loh, E. C. ; Maestas, M. M. ; Manago, N. ; Mannel, E. J. ; Marek, L. J. ; Martens, K. ; Matthews, J. A.J. ; Matthews, J. N. ; O'Neill, A. ; Painter, C. A. ; Perera, L. ; Reil, K. ; Riehle, R. ; Roberts, M. D. ; Sasaki, M. ; Schnetzer, S. R. ; Seman, M. ; Simpson, K. M. ; Sinnis, G. ; Smith, J. D. ; Snow, R. ; Sokolsky, P. ; Song, C. ; Springer, R. W. ; Stokes, B. T. ; Thomas, J. R. ; Thomas, S. B. ; Thomson, G. B. ; Tupa, D. ; Westerhoff, S. ; Wiencke, L. R. ; Zech, A. / Search for point sources of ultra-high-energy cosmic rays above 4.0 × 10¹⁹ eV using a maximum likelihood ratio test. In: Astrophysical Journal. 2005 ; Vol. 623, No. 1 I. pp. 164-170.

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abstract = "We present the results of a search for cosmic-ray point sources at energies in excess of 4.0 × 1019 eV in the combined data sets recorded by the Akeno Giant Air Shower Array and High Resolution Fly's Eye stereo experiments. The analysis is based on a maximum likelihood ratio test using the probability density function for each event rather than requiring an a priori choice of a fixed angular bin size. No statistically significant clustering of events consistent with a point source is found.",

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AU - Amann, J. F.

AU - Archbold, G.

AU - Atkins, R.

AU - Bellido, J. A.

AU - Belov, K.

AU - Betz, J. W.

AU - Ben-Zvi, S. Y.

AU - Bergman, D. R.

AU - Boyer, J. H.

AU - Burt, G. W.

AU - Cao, Z.

AU - Clay, R. W.

AU - Connolly, B. M.

AU - Dawson, B. R.

AU - Deng, W.

AU - Farrar, G. R.

AU - Fedorova, Y.

AU - Findlay, J.

AU - Finley, C. B.

AU - Hanlon, W. F.

AU - Hoffman, C. M.

AU - Holzscheiter, M. H.

AU - Hughes, G. A.

AU - Hüntemeyer, P.

AU - Jui, C. C.H.

AU - Kim, K.

AU - Kirn, M. A.

AU - Knapp, B. C.

AU - Loh, E. C.

AU - Maestas, M. M.

AU - Manago, N.

AU - Mannel, E. J.

AU - Marek, L. J.

AU - Martens, K.

AU - Matthews, J. A.J.

AU - Matthews, J. N.

AU - O'Neill, A.

AU - Painter, C. A.

AU - Perera, L.

AU - Reil, K.

AU - Riehle, R.

AU - Roberts, M. D.

AU - Sasaki, M.

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AU - Simpson, K. M.

AU - Sinnis, G.

AU - Smith, J. D.

AU - Snow, R.

AU - Sokolsky, P.

AU - Song, C.

AU - Springer, R. W.

AU - Stokes, B. T.

AU - Thomas, J. R.

AU - Thomas, S. B.

AU - Thomson, G. B.

AU - Tupa, D.

AU - Westerhoff, S.

AU - Wiencke, L. R.

AU - Zech, A.

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AB - We present the results of a search for cosmic-ray point sources at energies in excess of 4.0 × 1019 eV in the combined data sets recorded by the Akeno Giant Air Shower Array and High Resolution Fly's Eye stereo experiments. The analysis is based on a maximum likelihood ratio test using the probability density function for each event rather than requiring an a priori choice of a fixed angular bin size. No statistically significant clustering of events consistent with a point source is found.

KW - Acceleration of particles

KW - Cosmic rays

KW - Large-scale structure of universe

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JO - Astrophysical Journal

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