Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김항배 | - |
dc.date.accessioned | 2018-03-13T10:02:16Z | - |
dc.date.available | 2018-03-13T10:02:16Z | - |
dc.date.issued | 2013-11 | - |
dc.identifier.citation | ASTROPHYSICAL JOURNAL, 권: 777, 호: 2 | en_US |
dc.identifier.issn | 0004-637X | - |
dc.identifier.issn | 1538-4357 | - |
dc.identifier.uri | http://iopscience.iop.org/article/10.1088/0004-637X/777/2/88/meta | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/46333 | - |
dc.description.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. | en_US |
dc.description.sponsorship | The TA experiment is supported by the Japan Society for the Promotion of Science through Grants-in-Aid for Scientific Research on Specially Promoted Research (21000002) "Extreme Phenomena in the Universe Explored by Highest Energy Cosmic Rays" and the Inter-University Research Program of the Institute for Cosmic Ray Research; by the US National Science Foundation awards PHY-0307098, PHY-0601915, PHY-0703893, PHY-0758342, PHY-0848320, PHY-1069280, PHY-1069286 (Utah), and PHY-0649681 (Rutgers); by the National Research Foundation of Korea (2006-0050031, 2007-0056005, 2007-0093860, 2010-0028071, 2013-004883, R32-10130); and 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 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), the US Bureau of Land Management, and the US 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 as well as the University of Utah Center for High Performance Computing (CHPC). | en_US |
dc.language.iso | en | en_US |
dc.publisher | IOP PUBLISHING LTD | en_US |
dc.subject | acceleration of particles | en_US |
dc.subject | astroparticle physics | en_US |
dc.subject | cosmic rays | en_US |
dc.title | Correlations of the Arrival Directions of Ultra-high Energy Cosmic Rays with Extragalactic Objects as Observed by the Telescope Array Experiment | en_US |
dc.type | Article | en_US |
dc.relation.no | 2 | - |
dc.relation.volume | 777 | - |
dc.identifier.doi | 10.1088/0004-637X/777/2/88 | - |
dc.relation.page | 88-95 | - |
dc.relation.journal | ASTROPHYSICAL JOURNAL | - |
dc.contributor.googleauthor | Abu-Zayyad, T. | - |
dc.contributor.googleauthor | Aida, R. | - |
dc.contributor.googleauthor | Allen, M. | - |
dc.contributor.googleauthor | Anderson, R. | - |
dc.contributor.googleauthor | Azuma, R | - |
dc.contributor.googleauthor | Barcikowski, E. | - |
dc.contributor.googleauthor | Belz, J. W. | - |
dc.contributor.googleauthor | Bergman, D. R. | - |
dc.contributor.googleauthor | Cheon, B. G. | - |
dc.relation.code | 2013009047 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICS | - |
dc.identifier.pid | hbkim | - |
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