SIMBAD references

2018ApJ...865..124M - Astrophys. J., 865, 124-124 (2018/October-1)

Blazar flares as an origin of high-energy cosmic neutrinos?

MURASE K., OIKONOMOU F. and PETROPOULOU M.

Abstract (from CDS):

We consider implications of high-energy neutrino emission from blazar flares, including the recent event IceCube-170922A and the 2014-2015 neutrino flare that could originate from TXS 0506+056. First, we discuss their contribution to the diffuse neutrino intensity taking into account various observational constraints. Blazars are likely to be subdominant in the diffuse neutrino intensity at sub-PeV energies, and we show that blazar flares like those of TXS 0506+056 could make <=1%-10% of the total neutrino intensity. We also argue that the neutrino output of blazars can be dominated by the flares in the standard leptonic scenario for their γ-ray emission, and energetic flares may still be detected with a rate of ≲1yr–1. Second, we consider multi-messenger constraints on the source modeling. We show that luminous neutrino flares should be accompanied by luminous broadband cascade emission, emerging also in X-rays and γ-rays. This implies that not only γ-ray telescopes like Fermi but also X-ray sky monitors such as Swift and MAXI are critical to test the canonical picture based on the single-zone modeling. We also suggest a two-zone model that can naturally satisfy the X-ray constraints while explaining the flaring neutrinos via either photomeson or hadronuclear processes.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): astroparticle physics - galaxies: active - galaxies: jets - gamma rays: galaxies - neutrinos - radiation mechanisms: non-thermal

CDS comments: Paragr. 1: Big Bird (HESE-35) is not in SIMBAD.

Simbad objects: 11

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2021.03.09-09:13:49

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