Search for a small-scale neutrino anisotropy with three years of IceCube data

被引：0
|
作者：
Bernhard, Anna [1 ]
机构：
[1] Tech Univ Munich, D-85748 Garching, Germany
来源：
6TH INTERNATIONAL WORKSHOP ON VERY LARGE VOLUME NEUTRINO TELESCOPES (VLVVT 13) | 2014年 / 1630卷
关键词：
IceCube; neutrino astronomy; autocorrelation test;
D O I：
10.1063/1.4902774
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The IceCube neutrino observatory built in the antarctic ice offers unique opportunities in studying high energy neutrino emission from Galactic and extragalactic sources. Detecting such neutrino emission could give valuable information about the origin of cosmic rays. Recently, first evidence for a diffuse astrophysical neutrino signal in the PeV range was found with IceCube. There is no clear point source signal yet, and advanced analysis methods are being developed in order to improve the sensitivity to point sources and resolve the diffuse signal into point sources. Other searches like a energy-dependent likelihood scan were already performed on IceCube data. In this paper, we report a complementary search for multiple neutrino point sources from three years of IceCube data, performing an autocorrelation test on the full sky. This analysis is aiming for various faint sources at unknown positions and energy spectra in the sky. The result obtained from this search is consistant with a background-only case and shows an underfluctuation. Here, we present limits using the ansatz of the small-scale anisotropy search.
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收藏
页码：70 / 73
页数：4
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