IS THE ULTRA-HIGH ENERGY COSMIC-RAY EXCESS OBSERVED BY THE TELESCOPE ARRAY CORRELATED WITH ICECUBE NEUTRINOS?

被引：27
|
作者：
Fang, Ke [1 ,2 ]
Fujii, Toshihiro [1 ]
Linden, Tim [1 ]
Olinto, Angela V. [1 ,2 ]
机构：
[1] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA
[2] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA
来源：
ASTROPHYSICAL JOURNAL | 2014年 / 794卷 / 02期
基金：
美国国家科学基金会; 美国国家航空航天局;
关键词：
astroparticle physics; cosmic rays; gamma rays: galaxies; neutrinos; X-RAY; CLUSTERS; EMISSION; GALAXIES; SEARCH; ORIGIN;
D O I：
10.1088/0004-637X/794/2/126
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Telescope Array (TA) has observed a statistically significant excess in cosmic rays with energies above 57 EeV in a region of approximately 1150 deg(2) centered on coordinates R.A. = 146.7, decl. = 43.2. We note that the location of this excess correlates with 2 of the 28 extraterrestrial neutrinos recently observed by IceCube. The overlap between the two IceCube neutrinos and the TA excess is statistically significant at the 2 sigma level. Furthermore, the spectrum and intensity of the IceCube neutrinos is consistent with a single source which would also produce the TA excess. Finally, we discuss possible source classes with the correct characteristics to explain the cosmic-ray and neutrino fluxes with a single source.
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页数：6
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