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

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

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

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.",

keywords = "Acceleration of particles, Cosmic rays, Large-scale structure of universe",

author = "Abbasi, {R. U.} and T. Abu-Zayyad and Amann, {J. F.} and G. Archbold and R. Atkins and Bellido, {J. A.} and K. Belov and Betz, {J. W.} and Ben-Zvi, {S. Y.} and Bergman, {D. R.} and Boyer, {J. H.} and Burt, {G. W.} and Z. Cao and Clay, {R. W.} and Connolly, {B. M.} and Dawson, {B. R.} and W. Deng and Farrar, {G. R.} and Y. Fedorova and J. Findlay and Finley, {C. B.} and Hanlon, {W. F.} and Hoffman, {C. M.} and Holzscheiter, {M. H.} and Hughes, {G. A.} and P. H{\"u}ntemeyer and Jui, {C. C.H.} and K. Kim and Kirn, {M. A.} and Knapp, {B. C.} and Loh, {E. C.} and Maestas, {M. M.} and N. Manago and Mannel, {E. J.} and Marek, {L. J.} and K. Martens and Matthews, {J. A.J.} and Matthews, {J. N.} and A. O'Neill and Painter, {C. A.} and L. Perera and K. Reil and R. Riehle and Roberts, {M. D.} and M. Sasaki and Schnetzer, {S. R.} and M. Seman and Simpson, {K. M.} and G. Sinnis and Smith, {J. D.} and R. Snow and P. Sokolsky and C. Song and Springer, {R. W.} and Stokes, {B. T.} and Thomas, {J. R.} and Thomas, {S. B.} and Thomson, {G. B.} and D. Tupa and S. Westerhoff and Wiencke, {L. R.} and A. Zech",

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T1 - Search for point sources of ultra-high-energy cosmic rays above 4.0 × 1019 eV using a maximum likelihood ratio test

AU - Abbasi, R. U.

AU - Abu-Zayyad, T.

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.

AU - Schnetzer, S. R.

AU - Seman, M.

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.

PY - 2005/4/10

Y1 - 2005/4/10

N2 - 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.

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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DO - 10.1086/428570

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SP - 164

EP - 170

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1 I

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