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Constraints on the diffuse photon flux with energies above 10 18 eV using the surface detector of the Telescope Array experiment

Title
Constraints on the diffuse photon flux with energies above 10 18 eV using the surface detector of the Telescope Array experiment
Authors
Abbasi R.U.Abe M.Abu-Zayyad T.Allen M.Azuma R.Barcikowski E.Belz J.W.Bergman D.R.Blake S.A.Cady R.Cheon B.G.Chiba J.Chikawa M.di Matteo A.Fujii T.Fujita K.Fukushima M.Furlich G.Goto T.Hanlon W.Hayashi M.Hayashi Y.Hayashida N.Hibino K.Honda K.Ikeda D.Inoue N.Ishii T.Ishimori R.Ito H.Ivanov D.Jeong H.M.Jeong S.Jui C.C.H.Kadota K.Kakimoto F.Kalashev O.Kasahara K.Kawai H.Kawakami S.Kawana S.Kawata K.Kido E.Kim H.B.Kim J.H.Kishigami S.Kitamura S.Kitamura Y.Kuzmin V.Kuznetsov M.Kwon Y.J.Lee K.H.Lubsandorzhiev B.Lundquist J.P.Machida K.Martens K.Matsuyama T.Matthews J.N.Mayta R.Minamino M.Mukai K.Myers I.Nagasawa K.Nagataki S.Nakamura R.Nakamura T.Nonaka T.Oda H.Ogio S.Ogura J.Ohnishi M.Ohoka H.Okuda T.Omura Y.Ono M.Onogi R.Oshima A.Ozawa S.Park I.H.Piskunov M.S.Pshirkov M.S.Remington J.Rodriguez D.C.Rubtsov G.I.Ryu D.Sagawa H.Sahara R.Saito K.Saito Y.Sakaki N.Sakurai N.Scott L.M.Seki T.Sekino K.Shah P.D.Shibata F.Shibata T.Shimodaira H.Shin B.K.Shin H.S.Smith J.D.Sokolsky P.Stokes B.T.Stratton S.R.Stroman T.A.Suzawa T.Takagi Y.Takahashi Y.Takamura M.Takeda M.Takeishi R.Taketa A.Takita M.Tameda Y.Tanaka H.Tanaka K.Tanaka M.Thomas S.B.Thomson G.B.Tinyakov P.Tkachev I.Tokuno H.Tomida T.Troitsky S.Tsunesada Y.Tsutsumi K.Uchihori Y.Udo S.Urban F.Wong T.Yamamoto M.Yamane R.Yamaoka H.Yamazaki K.Yang J.Yashiro K.Yoneda Y.Yoshida S.Yoshii H.Zhezher Y.Zundel Z.
Ewha Authors
양종만
SCOPUS Author ID
양종만scopus
Issue Date
2019
Journal Title
Astroparticle Physics
ISSN
0927-6505JCR Link
Citation
Astroparticle Physics vol. 110, pp. 8 - 14
Keywords
Extensive air showersTelescope array experimentUltra-high-energy photons
Publisher
Elsevier B.V.
Indexed
SCI; SCIE; SCOPUS scopus
Document Type
Article
Abstract
We present the results of the search for ultra-high-energy photons with nine years of data from the Telescope Array surface detector. A multivariate classifier is built upon 16 reconstructed parameters of the extensive air shower. These parameters are related to the curvature and the width of the shower front, the steepness of the lateral distribution function, and the timing parameters of the waveforms sensitive to the shower muon content. A total number of two photon candidates found in the search is fully compatible with the expected background. The 95% CL limits on the diffuse flux of the photons with energies greater than 10 18.0 , 10 18.5 , 10 19.0 , 10 19.5 and 10 20.0 eV are set at the level of 0.067, 0.012, 0.0036, 0.0013, 0.0013km −2 yr −1 sr −1 correspondingly. © 2019 Elsevier B.V.
DOI
10.1016/j.astropartphys.2019.03.003
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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