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dc.contributor.author김항배-
dc.date.accessioned2016-11-03T01:00:55Z-
dc.date.available2016-11-03T01:00:55Z-
dc.date.issued2015-04-
dc.identifier.citationASTROPARTICLE PHYSICS, v. 64, Page. 49-62en_US
dc.identifier.issn0927-6505-
dc.identifier.issn1873-2852-
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0927650514001820-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/24119-
dc.description.abstractPrevious measurements of the composition of Ultra-High Energy Cosmic Rays (UHECRs) made by the High Resolution Fly's Eye (HiRes) and Pierre Auger Observatory (PAO) are seemingly contradictory, but utilize different detection methods, as HiRes was a stereo detector and PAO is a hybrid detector. The five year Telescope Array (TA) Middle Drum hybrid composition measurement is similar in some, but not all, respects in methodology to PAO, and good agreement is evident between data and a light, largely protonic, composition when comparing the measurements to predictions obtained with the QGSJetII-03 and QGSJet-01 c models. These models are also in agreement with previous HiRes stereo measurements, confirming the equivalence of the stereo and hybrid methods. The data is incompatible with a pure iron composition, for all models examined, over the available range of energies. The elongation rate and mean values of X-max are in good agreement with Pierre Auger Observatory data. This analysis is presented using two methods: data cuts using simple geometrical variables and a new pattern recognition technique. (C) 2014 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipThe Telescope Array experiment is supported by the Japan Society for the Promotion of Science through Grants-in-Aids for Scientific Research on Specially Promoted Research (21000002) "Extreme Phenomena in the Universe Explored by Highest Energy Cosmic Rays" and for Scientific Research (19104006), and the Inter-University Research Program of the Institute for Cosmic Ray Research; by the U.S. National Science Foundation awards PHY-0307098, PHY-0601915, PHY-0649681, PHY-0703893, PHY-0758342, PHY-0848320, PHY-1069280, and PHY-1069286; by the National Research Foundation of Korea (2007-0093860, R32-10130, 2012R1A1A2008381, 2013004883); by the Russian Academy of Sciences, RFBR grants 11-02-01528a and 13-02-01311a (INR), IISN project No. 4.4509.10 and Belgian Science Policy under IUAP VII/37 (ULB). This work was supported by the World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan. The foundations of Dr. Ezekiel R. and Edna Wattis Dumke, Willard L. Eccles and the George S. and Dolores Dore Eccles all helped with generous donations. The State Of Utah supported the project through its Economic Development Board, and the University of Utah through the Office of the Vice President for Research. The experimental site became available through the cooperation of the Utah School and Institutional Trust Lands Administration (SITLA), U.S. Bureau of Land Management, and the U.S. Air Force. We also wish to thank the people and the officials of Millard County, Utah for their steadfast and warm support. We gratefully acknowledge the contributions from the technical staffs of our home institutions. An allocation of computer time from the Center for High Performance Computing at the University of Utah is gratefully acknowledged.en_US
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.subjectUltra-High Energy Cosmic Raysen_US
dc.subjectCosmic ray compositionen_US
dc.subjectAtmospheric fluorescenceen_US
dc.subjectExtensive air shower arrayen_US
dc.subjectHybriden_US
dc.subjectTelescope Arrayen_US
dc.titleStudy of Ultra-High Energy Cosmic Ray composition using Telescope Array's Middle Drum detector and surface array in hybrid modeen_US
dc.typeArticleen_US
dc.relation.volume64-
dc.identifier.doi10.1016/j.astropartphys.2014.11.004-
dc.relation.page49-62-
dc.relation.journalASTROPARTICLE PHYSICS-
dc.contributor.googleauthorAbbasi, R. U.-
dc.contributor.googleauthorAbe, M.-
dc.contributor.googleauthorAbu-Zayyad, T.-
dc.contributor.googleauthorAllen, M.-
dc.contributor.googleauthorAnderson, R.-
dc.contributor.googleauthorAzuma, R.-
dc.contributor.googleauthorBarcikowski, E.-
dc.contributor.googleauthorBelz, J. W.-
dc.contributor.googleauthorBergman, D. R.-
dc.contributor.googleauthorBlake, S. A.-
dc.contributor.googleauthorKim, H. B.-
dc.relation.code2015001888-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF NATURAL SCIENCES[S]-
dc.sector.departmentDEPARTMENT OF PHYSICS-
dc.identifier.pidhbkim-
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COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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