Indications of Proton-Dominated Cosmic-Ray Composition above 1.6 EeV
The High Resolution Fly’s Eye Collaboration
刊名PHYSICAL REVIEW LETTERS
2010
卷号104期号:16
关键词RESOLUTION FLYS-EYE EXTENSIVE AIR-SHOWERS FLUORESCENCE YIELD CALIBRATION SPECTRUM HIRES DETECTORS
学科分类Physics
DOI10.1103/PhysRevLett.104.161101
通讯作者Belz, JW (reprint author), Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA.
英文摘要We report studies of ultrahigh-energy cosmic-ray composition via analysis of depth of air shower maximum (X(max)), for air shower events collected by the High-Resolution Fly's Eye (HiRes) observatory. The HiRes data are consistent with a constant elongation rate d < X(max)>/d[log(E)] of 47.9 +/- 6.0(stat) +/- 3.2(syst) g/cm(2)/decade for energies between 1.6 and 63 EeV, and are consistent with a predominantly protonic composition of cosmic rays when interpreted via the QGSJET01 and QGSJET-II high-energy hadronic interaction models. These measurements constrain models in which the galactic-to-extragalactic transition is the cause of the energy spectrum ankle at 4 x 10(18) eV.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
语种英语
WOS记录号WOS:000277007700010
引用统计
被引频次:188[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212940
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
作者单位中国科学院高能物理研究所
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The High Resolution Fly’s Eye Collaboration. Indications of Proton-Dominated Cosmic-Ray Composition above 1.6 EeV[J]. PHYSICAL REVIEW LETTERS,2010,104(16).
APA The High Resolution Fly’s Eye Collaboration.(2010).Indications of Proton-Dominated Cosmic-Ray Composition above 1.6 EeV.PHYSICAL REVIEW LETTERS,104(16).
MLA The High Resolution Fly’s Eye Collaboration."Indications of Proton-Dominated Cosmic-Ray Composition above 1.6 EeV".PHYSICAL REVIEW LETTERS 104.16(2010).
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