Galactic point sources of TeV antineutrinos

被引：97

作者：

Anchordoqui, LA ^{[1
]}

Goldberg, H

Halzen, F

Weiler, TJ

机构：

[1] Northeastern Univ, Dept Phys, Boston, MA 02155 USA

[2] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[3] Univ Chicago, Ctr Cosmol Phys, Chicago, IL 60637 USA

[4] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

来源：

PHYSICS LETTERS B | 2004年 / 593卷

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

D O I：

10.1016/j.physletb.2004.04.054

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

High energy cosmic ray experiments have identified an excess from the region of the Galactic Plane in a limited energy range around 10(18) eV (EeV). This is very suggestive of neutrons as candidate primaries, because the directional signal requires relatively-stable neutral primaries, and time-dilated neutrons can reach Earth from typical Galactic distances when the neutron energy exceeds an EeV. We here point out that if the Galactic messengers are neutrons, then those with energies below an EeV will decay in flight, providing a flux of cosmic antineutrinos above a TeV which is observable at a kilometer-scale neutrino observatory. The expected event rate per year above I TeV in a detector such as IceCube, for example, is 20 antineutrino showers (all flavors) and a 1degrees directional signal of 4 (v) over bar (mu) events. A measurement of this flux can serve to identify the first extraterrestrial point source of TeV antineutrinos. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：42 / 47

页数：6

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