On the Direct Correlation between Gamma-Rays and PeV Neutrinos from Blazars

被引：83

作者：

Gao, Shan ^{[1
]}

Pohl, Martin ^{[1
,2
]}

Winter, Walter ^{[1
]}

机构：

[1] Deutsch Elektronen Synchrotron DESY, Platanenallee 6, D-15738 Zeuthen, Germany

[2] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany

来源：

ASTROPHYSICAL JOURNAL | 2017年 / 843卷 / 02期

基金：

欧洲研究理事会;

关键词：

galaxies: jets; gamma rays: general; neutrinos; JETS; ACCELERATION; EMISSION; SEARCH;

D O I：

10.3847/1538-4357/aa7754

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the frequently used assumption in multi-messenger astrophysics that the gamma-ray and neutrino fluxes are directly connected because they are assumed to be produced by the same photohadronic production chain. An interesting candidate source for this test is the flat-spectrum radio quasar PKS B1424-418, which recently called attention to a potential correlation between an IceCube PeV neutrino event and its burst phase. We simulate both the multi-waveband photon and the neutrino emission from this source using a self-consistent radiation model. We demonstrate that a simple hadronic model cannot adequately describe the spectral energy distribution for this source, but a lepto-hadronic model with a subdominant hadronic component can reproduce the multi-waveband photon spectrum observed during various activity phases of the blazar. As a conclusion, up to about 0.3 neutrino events may coincide with the burst, which implies that the leptonic contribution dominates in the relevant energy band. We also demonstrate that the time-wise correlation between the neutrino event and burst phase is weak.

引用

页数：19

共 44 条

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