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dc.contributor.author천병구-
dc.date.accessioned2018-03-13T05:12:57Z-
dc.date.available2018-03-13T05:12:57Z-
dc.date.issued2013-05-
dc.identifier.citationAstrophysical Journal Letters, May 2013, 768(1), P.1-5en_US
dc.identifier.issn2041-8205-
dc.identifier.urihttp://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=66&SID=C2HCy2azV5A6NNUnA4O&page=1&doc=10-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/45926-
dc.description.abstractThe Telescope Array (TA) collaboration has measured the energy spectrum of ultra-high energy cosmic rays (UHECRs) with primary energies above 1.6 × 1018 eV. This measurement is based upon four years of observation by the surface detector component of TA. The spectrum shows a dip at an energy of 4.6 × 1018 eV and a steepening at 5.4 × 1019 eV which is consistent with the expectation from the GZK cutoff. We present the results of a technique, new to the analysis of UHECR surface detector data, that involves generating a complete simulation of UHECRs striking the TA surface detector. The procedure starts with shower simulations using the CORSIKA Monte Carlo program where we have solved the problems caused by use of the "thinning" approximation. This simulation method allows us to make an accurate calculation of the acceptance of the detector for the energies concerned.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 (S) (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-0703893, PHY-0758342, and PHY-0848320 (Utah), and PHY-0649681 (Rutgers); by the National Research Foundation of Korea (2006-0050031, 2007-0056005, 2007-0093860, 2010-0011378, 2010-0028071, R32-10130, 2011-0002617); by the Russian Academy of Sciences, RFBR grants 10-02-01406a and 11-02-01528a (INR), IISN project No. 4.4509.10 and Belgian Science Policy under IUAP VI/11 (ULB). 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 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.publisherIOP Publishing LTDen_US
dc.subjectastroparticle physicsen_US
dc.subjectcosmic raysen_US
dc.subjectmethodsen_US
dc.subjectdata analysisen_US
dc.titleTHE COSMIC-RAY ENERGY SPECTRUM OBSERVED WITH THE SURFACE DETECTOR OF THE TELESCOPE ARRAY EXPERIMENTen_US
dc.typeArticleen_US
dc.relation.no1-
dc.relation.volume768-
dc.identifier.doi10.1088/2041-8205/768/1/L1-
dc.relation.page1-5-
dc.relation.journalASTROPHYSICAL JOURNAL LETTERS-
dc.contributor.googleauthorAbu-Zayyad, T.-
dc.contributor.googleauthorAida, R.-
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.googleauthorCady, R.-
dc.relation.code2013009048-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF NATURAL SCIENCES[S]-
dc.sector.departmentDEPARTMENT OF PHYSICS-
dc.identifier.pidbgcheon-
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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