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
- Author
- 천병구
- Keywords
- Ultra-high-energy photons; Telescope array experiment; Extensive air showers
- Issue Date
- 2019-07
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- ASTROPARTICLE PHYSICS, v. 110, Page. 8-14
- 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, 0.0013 km(-2) yr(-1) sr(-1) correspondingly. (C) 2019 Elsevier B.V. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0927650518302950?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/148370
- ISSN
- 0927-6505; 1873-2852
- DOI
- 10.1016/j.astropartphys.2019.03.003
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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