Use of ANTARES and IceCube Data to Constrain a Single Power-law Neutrino Flux
Use of ANTARES and IceCube Data to Constrain a Single Power-law Neutrino Flux
复制标题
使用 ANTARES 和 IceCube 数据约束单个幂律中微子通量
DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
S. Morisi
中科院分区:
文献类型:
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作者:
M. Chianese;R. Mele;G. Miele;P. Migliozzi;S. Morisi
We perform the first statistical combined analysis of the diffuse neutrino flux observed by ANTARES (nine-year) and IceCube (six-year) by assuming a single astrophysical power-law flux. The combined analysis reduces by a few percent the best-fit values for the flux normalization and the spectral index. Both data samples show an excess in the same energy range (40–200 TeV), suggesting the presence of a second component. We perform a goodness-of-fit test to scrutinize the null assumption of a single power-law, scanning different values for the spectral index. The addition of the ANTARES data reduces the p-value by a factor . In particular, a single power-law component in the neutrino flux with the spectral index deduced by the six-year up-going muon neutrinos of IceCube is disfavored with a p-value smaller than 10−2.
影响因子:
5
作者:
Aartsen, M. G.;Abbasi, R.;Zoll, M.
通讯作者:
Zoll, M.
影响因子:
5
作者:
Aartsen, M. G.;Ackermann, M.;Zoll, M.
通讯作者:
Zoll, M.