Correlations of the arrival directions of ultra-high energy cosmic rays with extragalactic objects as observed by the telescope array experiment

T. Abu-Zayyad; R. Aida; M. Allen; R. Anderson; R. Azuma; E. Barcikowski; J. W. Belz; D. R. Bergman; S. A. Blake; R. Cady; B. G. Cheon; J. Chiba; M. Chikawa; E. J. Cho; W. R. Cho; H. Fujii; T. Fujii; T. Fukuda; M. Fukushima; W. Hanlon; K. Hayashi; Y. Hayashi; N. Hayashida; K. Hibino; K. Hiyama; K. Honda; T. Iguchi; D. Ikeda; K. Ikuta; N. Inoue; T. Ishii; R. Ishimori; H. Ito; D. Ivanov; S. Iwamoto; C. C.H. Jui; K. Kadota; F. Kakimoto; O. Kalashev; T. Kanbe; K. Kasahara; H. Kawai; S. Kawakami; S. Kawana; K. Kawata; E. Kido; H. B. Kim; H. K. Kim; J. H. Kim; J. H. Kim; K. Kitamoto; S. Kitamura; Y. Kitamura; K. Kobayashi; Y. Kobayashi; Y. Kondo; K. Kuramoto; V. Kuzmin; Y. J. Kwon; J. Lan; S. I. Lim; J. P. Lundquist; S. Machida; K. Martens; T. Matsuda; T. Matsuura; T. Matsuyama; J. N. Matthews; M. Minamino; K. Miyata; Y. Murano; I. Myers; K. Nagasawa; S. Nagataki; T. Nakamura; S. W. Nam; T. Nonaka; S. Ogio; M. Ohnishi; H. Ohoka; K. Oki; D. Oku; T. Okuda; M. Ono; A. Oshima; S. Ozawa; I. H. Park; M. S. Pshirkov; D. C. Rodriguez; S. Y. Roh; G. Rubtsov; D. Ryu; H. Sagawa; N. Sakurai; A. L. Sampson; L. M. Scott; P. D. Shah; F. Shibata; T. Shibata; H. Shimodaira; B. K. Shin; J. I. Shin; T. Shirahama; J. D. Smith; P. Sokolsky; R. W. Springer; B. T. Stokes; S. R. Stratton; T. Stroman; S. Suzuki; Y. Takahashi; M. Takeda; A. Taketa; M. Takita; Y. Tameda; H. Tanaka; K. Tanaka; M. Tanaka; S. B. Thomas; G. B. Thomson; P. Tinyakov; I. Tkachev; H. Tokuno; T. Tomida; S. Troitsky; Y. Tsunesada; K. Tsutsumi; Y. Tsuyuguchi; Y. Uchihori; S. Udo; H. Ukai; F. Urban; G. Vasiloff; Y. Wada; T. Wong; Y. Yamakawa; R. Yamane; H. Yamaoka; K. Yamazaki; J. Yang; Y. Yoneda; S. Yoshida; H. Yoshii; X. Zhou; R. Zollinger; Z. Zundel

doi:10.1088/0004-637X/777/2/88

Correlations of the arrival directions of ultra-high energy cosmic rays with extragalactic objects as observed by the telescope array experiment

T. Abu-Zayyad, R. Aida, M. Allen, R. Anderson, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, R. Cady, B. G. Cheon, J. Chiba, M. Chikawa, E. J. Cho, W. R. Cho, H. Fujii, T. Fujii, T. Fukuda, M. Fukushima, W. HanlonK. Hayashi, Y. Hayashi, N. Hayashida, K. Hibino, K. Hiyama, K. Honda, T. Iguchi, D. Ikeda, K. Ikuta, N. Inoue, T. Ishii, R. Ishimori, H. Ito, D. Ivanov, S. Iwamoto, C. C.H. Jui, K. Kadota, F. Kakimoto, O. Kalashev, T. Kanbe, K. Kasahara, H. Kawai, S. Kawakami, S. Kawana, K. Kawata, E. Kido, H. B. Kim, H. K. Kim, J. H. Kim, J. H. Kim, K. Kitamoto, S. Kitamura, Y. Kitamura, K. Kobayashi, Y. Kobayashi, Y. Kondo, K. Kuramoto, V. Kuzmin, Y. J. Kwon, J. Lan, S. I. Lim, J. P. Lundquist, S. Machida, K. Martens, T. Matsuda, T. Matsuura, T. Matsuyama, J. N. Matthews, M. Minamino, K. Miyata, Y. Murano, I. Myers, K. Nagasawa, S. Nagataki, T. Nakamura, S. W. Nam, T. Nonaka, S. Ogio, M. Ohnishi, H. Ohoka, K. Oki, D. Oku, T. Okuda, M. Ono, A. Oshima, S. Ozawa, I. H. Park, M. S. Pshirkov, D. C. Rodriguez, S. Y. Roh, G. Rubtsov, D. Ryu, H. Sagawa, N. Sakurai, A. L. Sampson, L. M. Scott, P. D. Shah, F. Shibata, T. Shibata, H. Shimodaira, B. K. Shin, J. I. Shin, T. Shirahama, J. D. Smith, P. Sokolsky, R. W. Springer, B. T. Stokes, S. R. Stratton, T. Stroman, S. Suzuki, Y. Takahashi, M. Takeda, A. Taketa, M. Takita, Y. Tameda, H. Tanaka, K. Tanaka, M. Tanaka, S. B. Thomas, G. B. Thomson, P. Tinyakov, I. Tkachev, H. Tokuno, T. Tomida, S. Troitsky, Y. Tsunesada, K. Tsutsumi, Y. Tsuyuguchi, Y. Uchihori, S. Udo, H. Ukai, F. Urban, G. Vasiloff, Y. Wada, T. Wong, Y. Yamakawa, R. Yamane, H. Yamaoka, K. Yamazaki, J. Yang, Y. Yoneda, S. Yoshida, H. Yoshii, X. Zhou, R. Zollinger, Z. Zundel

Experimental Particle Physics

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

46 Citations (Scopus)

Abstract

We search for correlations between the positions of extragalactic objects and the arrival directions of ultra-high energy cosmic rays (UHECRs) with primary energy E ≥ 40 EeV as observed by the surface detector array of the Telescope Array (TA) experiment during the first 40 months of operation. We examine several public astronomical object catalogs, including the Veron-Cetty and Veron catalog of active galactic nuclei. We count the number of TA events correlated with objects in each catalog as a function of three parameters: the maximum angular separation between a TA event and an object, the minimum energy of the events, and the maximum redshift of the objects. We determine the combination of these parameters that maximizes the correlations, and we calculate the probability of having the same levels of correlations from an isotropic distribution of UHECR arrival directions. No statistically significant correlations are found when penalties for scanning over the above parameters and for searching in several catalogs are taken into account.

Original language	English
Article number	88
Journal	Astrophysical Journal
Volume	777
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/777/2/88
Publication status	Published - Nov 10 2013

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-637X/777/2/88

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Abu-Zayyad, T., Aida, R., Allen, M., Anderson, R., Azuma, R., Barcikowski, E., Belz, J. W., Bergman, D. R., Blake, S. A., Cady, R., Cheon, B. G., Chiba, J., Chikawa, M., Cho, E. J., Cho, W. R., Fujii, H., Fujii, T., Fukuda, T., Fukushima, M., ... Zundel, Z. (2013). Correlations of the arrival directions of ultra-high energy cosmic rays with extragalactic objects as observed by the telescope array experiment. Astrophysical Journal, 777(2), [88]. https://doi.org/10.1088/0004-637X/777/2/88

Abu-Zayyad, T, Aida, R, Allen, M, Anderson, R, Azuma, R, Barcikowski, E, Belz, JW, Bergman, DR, Blake, SA, Cady, R, Cheon, BG, Chiba, J, Chikawa, M, Cho, EJ, Cho, WR, Fujii, H, Fujii, T, Fukuda, T, Fukushima, M, Hanlon, W, Hayashi, K, Hayashi, Y, Hayashida, N, Hibino, K, Hiyama, K, Honda, K, Iguchi, T, Ikeda, D, Ikuta, K, Inoue, N, Ishii, T, Ishimori, R, Ito, H, Ivanov, D, Iwamoto, S, Jui, CCH, Kadota, K, Kakimoto, F, Kalashev, O, Kanbe, T, Kasahara, K, Kawai, H, Kawakami, S, Kawana, S, Kawata, K, Kido, E, Kim, HB, Kim, HK, Kim, JH, Kim, JH, Kitamoto, K, Kitamura, S, Kitamura, Y, Kobayashi, K, Kobayashi, Y, Kondo, Y, Kuramoto, K, Kuzmin, V, Kwon, YJ, Lan, J, Lim, SI, Lundquist, JP, Machida, S, Martens, K, Matsuda, T, Matsuura, T, Matsuyama, T, Matthews, JN, Minamino, M, Miyata, K, Murano, Y, Myers, I, Nagasawa, K, Nagataki, S, Nakamura, T, Nam, SW, Nonaka, T, Ogio, S, Ohnishi, M, Ohoka, H, Oki, K, Oku, D, Okuda, T, Ono, M, Oshima, A, Ozawa, S, Park, IH, Pshirkov, MS, Rodriguez, DC, Roh, SY, Rubtsov, G, Ryu, D, Sagawa, H, Sakurai, N, Sampson, AL, Scott, LM, Shah, PD, Shibata, F, Shibata, T, Shimodaira, H, Shin, BK, Shin, JI, Shirahama, T, Smith, JD, Sokolsky, P, Springer, RW, Stokes, BT, Stratton, SR, Stroman, T, Suzuki, S, Takahashi, Y, Takeda, M, Taketa, A, Takita, M, Tameda, Y, Tanaka, H, Tanaka, K, Tanaka, M, Thomas, SB, Thomson, GB, Tinyakov, P, Tkachev, I, Tokuno, H, Tomida, T, Troitsky, S, Tsunesada, Y, Tsutsumi, K, Tsuyuguchi, Y, Uchihori, Y, Udo, S, Ukai, H, Urban, F, Vasiloff, G, Wada, Y, Wong, T, Yamakawa, Y, Yamane, R, Yamaoka, H, Yamazaki, K, Yang, J, Yoneda, Y, Yoshida, S, Yoshii, H, Zhou, X, Zollinger, R & Zundel, Z 2013, 'Correlations of the arrival directions of ultra-high energy cosmic rays with extragalactic objects as observed by the telescope array experiment', Astrophysical Journal, vol. 777, no. 2, 88. https://doi.org/10.1088/0004-637X/777/2/88

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title = "Correlations of the arrival directions of ultra-high energy cosmic rays with extragalactic objects as observed by the telescope array experiment",

abstract = "We search for correlations between the positions of extragalactic objects and the arrival directions of ultra-high energy cosmic rays (UHECRs) with primary energy E ≥ 40 EeV as observed by the surface detector array of the Telescope Array (TA) experiment during the first 40 months of operation. We examine several public astronomical object catalogs, including the Veron-Cetty and Veron catalog of active galactic nuclei. We count the number of TA events correlated with objects in each catalog as a function of three parameters: the maximum angular separation between a TA event and an object, the minimum energy of the events, and the maximum redshift of the objects. We determine the combination of these parameters that maximizes the correlations, and we calculate the probability of having the same levels of correlations from an isotropic distribution of UHECR arrival directions. No statistically significant correlations are found when penalties for scanning over the above parameters and for searching in several catalogs are taken into account.",

author = "T. Abu-Zayyad and R. Aida and M. Allen and R. Anderson and R. Azuma and E. Barcikowski and Belz, {J. W.} and Bergman, {D. R.} and Blake, {S. A.} and R. Cady and Cheon, {B. G.} and J. Chiba and M. Chikawa and Cho, {E. J.} and Cho, {W. R.} and H. Fujii and T. Fujii and T. Fukuda and M. Fukushima and W. Hanlon and K. Hayashi and Y. Hayashi and N. Hayashida and K. Hibino and K. Hiyama and K. Honda and T. Iguchi and D. Ikeda and K. Ikuta and N. Inoue and T. Ishii and R. Ishimori and H. Ito and D. Ivanov and S. Iwamoto and Jui, {C. C.H.} and K. Kadota and F. Kakimoto and O. Kalashev and T. Kanbe and K. Kasahara and H. Kawai and S. Kawakami and S. Kawana and K. Kawata and E. Kido and Kim, {H. B.} and Kim, {H. K.} and Kim, {J. H.} and Kim, {J. H.} and K. Kitamoto and S. Kitamura and Y. Kitamura and K. Kobayashi and Y. Kobayashi and Y. Kondo and K. Kuramoto and V. Kuzmin and Kwon, {Y. J.} and J. Lan and Lim, {S. I.} and Lundquist, {J. P.} and S. Machida and K. Martens and T. Matsuda and T. Matsuura and T. Matsuyama and Matthews, {J. N.} and M. Minamino and K. Miyata and Y. Murano and I. Myers and K. Nagasawa and S. Nagataki and T. Nakamura and Nam, {S. W.} and T. Nonaka and S. Ogio and M. Ohnishi and H. Ohoka and K. Oki and D. Oku and T. Okuda and M. Ono and A. Oshima and S. Ozawa and Park, {I. H.} and Pshirkov, {M. S.} and Rodriguez, {D. C.} and Roh, {S. Y.} and G. Rubtsov and D. Ryu and H. Sagawa and N. Sakurai and Sampson, {A. L.} and Scott, {L. M.} and Shah, {P. D.} and F. Shibata and T. Shibata and H. Shimodaira and Shin, {B. K.} and Shin, {J. I.} and T. Shirahama and Smith, {J. D.} and P. Sokolsky and Springer, {R. W.} and Stokes, {B. T.} and Stratton, {S. R.} and T. Stroman and S. Suzuki and Y. Takahashi and M. Takeda and A. Taketa and M. Takita and Y. Tameda and H. Tanaka and K. Tanaka and M. Tanaka and Thomas, {S. B.} and Thomson, {G. B.} and P. Tinyakov and I. Tkachev and H. Tokuno and T. Tomida and S. Troitsky and Y. Tsunesada and K. Tsutsumi and Y. Tsuyuguchi and Y. Uchihori and S. Udo and H. Ukai and F. Urban and G. Vasiloff and Y. Wada and T. Wong and Y. Yamakawa and R. Yamane and H. Yamaoka and K. Yamazaki and J. Yang and Y. Yoneda and S. Yoshida and H. Yoshii and X. Zhou and R. Zollinger and Z. Zundel",

year = "2013",

month = nov,

day = "10",

doi = "10.1088/0004-637X/777/2/88",

language = "English",

volume = "777",

journal = "Astrophysical Journal",

issn = "0004-637X",

number = "2",

}

TY - JOUR

T1 - Correlations of the arrival directions of ultra-high energy cosmic rays with extragalactic objects as observed by the telescope array experiment

AU - Abu-Zayyad, T.

AU - Aida, R.

AU - Allen, M.

AU - Anderson, R.

AU - Azuma, R.

AU - Barcikowski, E.

AU - Belz, J. W.

AU - Bergman, D. R.

AU - Blake, S. A.

AU - Cady, R.

AU - Cheon, B. G.

AU - Chiba, J.

AU - Chikawa, M.

AU - Cho, E. J.

AU - Cho, W. R.

AU - Fujii, H.

AU - Fujii, T.

AU - Fukuda, T.

AU - Fukushima, M.

AU - Hanlon, W.

AU - Hayashi, K.

AU - Hayashi, Y.

AU - Hayashida, N.

AU - Hibino, K.

AU - Hiyama, K.

AU - Honda, K.

AU - Iguchi, T.

AU - Ikeda, D.

AU - Ikuta, K.

AU - Inoue, N.

AU - Ishii, T.

AU - Ishimori, R.

AU - Ito, H.

AU - Ivanov, D.

AU - Iwamoto, S.

AU - Jui, C. C.H.

AU - Kadota, K.

AU - Kakimoto, F.

AU - Kalashev, O.

AU - Kanbe, T.

AU - Kasahara, K.

AU - Kawai, H.

AU - Kawakami, S.

AU - Kawana, S.

AU - Kawata, K.

AU - Kido, E.

AU - Kim, H. B.

AU - Kim, H. K.

AU - Kim, J. H.

AU - Kitamoto, K.

AU - Kitamura, S.

AU - Kitamura, Y.

AU - Kobayashi, K.

AU - Kobayashi, Y.

AU - Kondo, Y.

AU - Kuramoto, K.

AU - Kuzmin, V.

AU - Kwon, Y. J.

AU - Lan, J.

AU - Lim, S. I.

AU - Lundquist, J. P.

AU - Machida, S.

AU - Martens, K.

AU - Matsuda, T.

AU - Matsuura, T.

AU - Matsuyama, T.

AU - Matthews, J. N.

AU - Minamino, M.

AU - Miyata, K.

AU - Murano, Y.

AU - Myers, I.

AU - Nagasawa, K.

AU - Nagataki, S.

AU - Nakamura, T.

AU - Nam, S. W.

AU - Nonaka, T.

AU - Ogio, S.

AU - Ohnishi, M.

AU - Ohoka, H.

AU - Oki, K.

AU - Oku, D.

AU - Okuda, T.

AU - Ono, M.

AU - Oshima, A.

AU - Ozawa, S.

AU - Park, I. H.

AU - Pshirkov, M. S.

AU - Rodriguez, D. C.

AU - Roh, S. Y.

AU - Rubtsov, G.

AU - Ryu, D.

AU - Sagawa, H.

AU - Sakurai, N.

AU - Sampson, A. L.

AU - Scott, L. M.

AU - Shah, P. D.

AU - Shibata, F.

AU - Shibata, T.

AU - Shimodaira, H.

AU - Shin, B. K.

AU - Shin, J. I.

AU - Shirahama, T.

AU - Smith, J. D.

AU - Sokolsky, P.

AU - Springer, R. W.

AU - Stokes, B. T.

AU - Stratton, S. R.

AU - Stroman, T.

AU - Suzuki, S.

AU - Takahashi, Y.

AU - Takeda, M.

AU - Taketa, A.

AU - Takita, M.

AU - Tameda, Y.

AU - Tanaka, H.

AU - Tanaka, K.

AU - Tanaka, M.

AU - Thomas, S. B.

AU - Thomson, G. B.

AU - Tinyakov, P.

AU - Tkachev, I.

AU - Tokuno, H.

AU - Tomida, T.

AU - Troitsky, S.

AU - Tsunesada, Y.

AU - Tsutsumi, K.

AU - Tsuyuguchi, Y.

AU - Uchihori, Y.

AU - Udo, S.

AU - Ukai, H.

AU - Urban, F.

AU - Vasiloff, G.

AU - Wada, Y.

AU - Wong, T.

AU - Yamakawa, Y.

AU - Yamane, R.

AU - Yamaoka, H.

AU - Yamazaki, K.

AU - Yang, J.

AU - Yoneda, Y.

AU - Yoshida, S.

AU - Yoshii, H.

AU - Zhou, X.

AU - Zollinger, R.

AU - Zundel, Z.

PY - 2013/11/10

Y1 - 2013/11/10

N2 - We search for correlations between the positions of extragalactic objects and the arrival directions of ultra-high energy cosmic rays (UHECRs) with primary energy E ≥ 40 EeV as observed by the surface detector array of the Telescope Array (TA) experiment during the first 40 months of operation. We examine several public astronomical object catalogs, including the Veron-Cetty and Veron catalog of active galactic nuclei. We count the number of TA events correlated with objects in each catalog as a function of three parameters: the maximum angular separation between a TA event and an object, the minimum energy of the events, and the maximum redshift of the objects. We determine the combination of these parameters that maximizes the correlations, and we calculate the probability of having the same levels of correlations from an isotropic distribution of UHECR arrival directions. No statistically significant correlations are found when penalties for scanning over the above parameters and for searching in several catalogs are taken into account.

AB - We search for correlations between the positions of extragalactic objects and the arrival directions of ultra-high energy cosmic rays (UHECRs) with primary energy E ≥ 40 EeV as observed by the surface detector array of the Telescope Array (TA) experiment during the first 40 months of operation. We examine several public astronomical object catalogs, including the Veron-Cetty and Veron catalog of active galactic nuclei. We count the number of TA events correlated with objects in each catalog as a function of three parameters: the maximum angular separation between a TA event and an object, the minimum energy of the events, and the maximum redshift of the objects. We determine the combination of these parameters that maximizes the correlations, and we calculate the probability of having the same levels of correlations from an isotropic distribution of UHECR arrival directions. No statistically significant correlations are found when penalties for scanning over the above parameters and for searching in several catalogs are taken into account.

UR - http://www.scopus.com/inward/record.url?scp=84886659518&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84886659518&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/777/2/88

DO - 10.1088/0004-637X/777/2/88

M3 - Article

AN - SCOPUS:84886659518

SN - 0004-637X

VL - 777

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 88

ER -

Correlations of the arrival directions of ultra-high energy cosmic rays with extragalactic objects as observed by the telescope array experiment

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