NEUTRINOS FROM PRIMORDIAL BLACK-HOLES

被引:34
作者
HALZEN, F [1 ]
KESZTHELYI, B [1 ]
机构
[1] UNIV SANTIAGO,DEPT FIS PARTICULAS,E-15706 SANTIAGO,SPAIN
来源
PHYSICAL REVIEW D | 1995年 / 52卷 / 06期
关键词
D O I
10.1103/PhysRevD.52.3239
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The emission of particles from black holes created in the early Universe has detectable astrophysical consequences. The most stringent bound on their abundance has been obtained from the absence of a detectable diffuse flux of 100 MeV photons. Further scrutiny of these bounds is of interest as they, for instance, rule out primordial black holes as a dark matter candidate. We here point out that these bounds can, in principle, be improved by studying the diffuse cosmic neutrino flux. Measurements of near-vertical atmospheric neutrino fluxes in a region of low geomagnetic latitude can provide a competitive bound. The most favorable energy to detect a possible diffuse flux of primordial black hole origin is found to be a few MeV. We also show that measurements of the diffuse v(r) flux is the most promising to improve the existing bounds deduced from gamma-ray measurements. Neutrinos from individual black hole explosions can be detected in the GeV-TeV energy region. We find that the kilometer-scale detectors, recently proposed,are able to establish competitive bounds.
引用
收藏
页码:3239 / 3247
页数:9
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