Detection prospects of the Telescope Array hotspot by space observatories

被引：5
|
作者：
Semikoz, D. [1 ]
Tinyakov, P. [2 ]
Zotov, M. [3 ]
机构：
[1] Univ Paris Diderot, Observ Paris, Sorbonne Paris Cite, APC,CNRS,IN2P3,CEA,IRFU, F-11975205 Paris, France
[2] Univ Libre Bruxelles, Serv Phys Theor, CP225, B-1050 Brussels, Belgium
[3] MV Lomonosov Moscow State Univ SINP MSU, DV Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia
来源：
PHYSICAL REVIEW D | 2016年 / 93卷 / 10期
基金：
俄罗斯基础研究基金会;
关键词：
ENERGY COSMIC-RAYS; GALACTIC MAGNETIC-FIELD; ARRIVAL DIRECTIONS; EXTRAGALACTIC OBJECTS; SCALE ANISOTROPY; SURFACE DETECTOR; SPECTRUM; SEARCHES;
D O I：
10.1103/PhysRevD.93.103005
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In the present-day cosmic ray data, the strongest indication of anisotropy of the ultrahigh energy cosmic rays is the 20-degree hotspot observed by the Telescope Array with the statistical significance of 3.4 sigma. In this work, we study the possibility of detecting such a spot by space-based all-sky observatories. We show that if the detected luminosity of the hotspot is attributed to a physical effect and not a statistical fluctuation, the KLYPVE and JEM-EUSO experiments would need to collect similar to 300 events with E > 57 EeV in order to detect the hotspot at the 5 sigma confidence level with the 68% probability. We also study the dependence of the detection prospects on the hotspot luminosity.
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页数：5
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