Decomposing blazar spectra into lepto‐hadronic emission components

Gokus, A.; Richter, Stephan R.; Spanier, F.; Kreter, M.; Kadler, M.; Mannheim, K.; Wilms, J.

doi:10.1002/asna.201813500

Cited by 11 publications

(12 citation statements)

References 45 publications

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“…The hadronic contribution to the highenergy emission is constrained by the X-ray flux expected in conventional models for blazars. For details, see (Gokus et al, 2018;Keivani et al, 2018;Murase et al, 2018;Sahakyan, 2018;Zhang et al, 2018;Cerruti et al, 2019;Gao et al, 2019).…”

Section: The First Truly Multimessenger Campaignmentioning

confidence: 99%

Multimessenger Search for the Sources of Cosmic Rays Using Cosmic Neutrinos

Halzen

Kheirandish

2019

Front. Astron. Space Sci.

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Section: The First Truly Multimessenger Campaignmentioning

confidence: 99%

Multimessenger Search for the Sources of Cosmic Rays Using Cosmic Neutrinos

Halzen

Kheirandish

2019

Front. Astron. Space Sci.

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“…In the end, the conclusion is that, in conventional blazar models, a positive fluctuation is required to accommodate the single neutrino in 2017-never mind the dozen in the 2014-15 neutrino flare that we will discuss later. For details, see [34,35,36,37,38,39,40].…”

Section: Pos(icrc2019)021mentioning

confidence: 99%

Cosmic Neutrinos and the Cosmic-Ray Accelerator TXS 0506+056

Halzen¹

2019

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)

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IceCube discovered a flux of cosmic neutrinos originating in extragalactic sources with an energy density close to that in gamma rays and cosmic rays. A multimessenger campaign triggered by the coincident observation of a gamma-ray flare and a 290-TeV IceCube neutrino pinpointed the cosmic-ray accelerator TXS 0506+056. Subsequently, the IceCube archival data revealed a 3-month burst of 13 cosmic neutrinos in 2014-15 that dominates the neutrino flux of the source over the 9.5 years of observations. The original identification of the source as a blazar was puzzling because it requires a major accretion event onto the rotating supermassive black hole to accommodate the neutrino burst. Subsequent high-resolution radio images of the source with the VLBA brought to light a merger of two galaxies, revealed by the interaction of two jets entangled in the source. Recently, the blazar PKS 1502+106 was found in the direction of a 300-TeV neutrino alert, IC-190730. OVRA radio observations at 15 GHz indicate that the neutrino also coincides with the highest flux density of a flare that started five years ago. This matches the similar long-term outburst seen from TXS 0506+056 and may indicate merger activity. Also, the dominant hotspot in the 10-year IceCube neutrino sky map, NGC 1068 (Messier 77), is a Seyfert galaxy undergoing a major accretion event onto the black hole. A few-percent fraction of such special sources, now labeled as gamma-ray blazars, is sufficient to accommodate the diffuse cosmic neutrino flux observed by IceCube. While rapid progress seems likely, the observations also convincingly make the case for the construction of more and larger neutrino telescopes with better angular resolution.

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“…In the end, the conclusion is that, in conventional blazar models, a positive fluctuation is required to accommodate the single neutrino in 2017 -never mind the dozen in the 2014-2015 neutrino flare that we will discuss later. For details, see [34][35][36][37][38][39][40].…”

Section: The First Coincident Observations Of High-energy Neutrinos Amentioning

confidence: 99%

IceCube: A New Window on the Universe

Halzen¹

2019

Acta Phys. Pol. B

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IceCube discovered a flux of cosmic neutrinos originating in extragalactic sources with an energy density close to that in gamma rays and cosmic rays. A multimessenger campaign triggered by the coincident observation of a gamma-ray flare and a 290-TeV IceCube neutrino pinpointed the cosmicray accelerator TXS 0506+056. Subsequently, the IceCube archival data revealed a 3-month burst of 13 cosmic neutrinos in 2014-2015 that dominates the neutrino flux of the source over the 9.5 years of observations. The original identification of the source as a blazar was puzzling because it requires a major accretion event onto the rotating supermassive black hole to accommodate the neutrino burst. Subsequent high-resolution radio images of the source with the VLBA brought to light a merger of two galaxies, revealed by the interaction of two jets entangled in the source. Recently, the blazar PKS 1502+106 was found in the direction of a 300-TeV neutrino alert, IC-190730. OVRA radio observations at 15 GHz indicate that the neutrino also coincides with the highest flux density of a flare that started five years ago. This matches the similar long-term outburst seen from TXS 0506+056 and may indicate merger activity. Also, the dominant hotspot in the 10-year IceCube neutrino sky map, NGC 1068 (Messier 77), is a Seyfert galaxy undergoing a major accretion event onto the black hole. A few-percent fraction of such special sources, now labeled gammaray blazars, is sufficient to accommodate the diffuse cosmic neutrino flux observed by IceCube. While rapid progress seems likely, the observations also convincingly make the case for the construction of more and larger neutrino telescopes with better angular resolution.

show abstract

Decomposing blazar spectra into lepto‐hadronic emission components

Cited by 11 publications

References 45 publications

Multimessenger Search for the Sources of Cosmic Rays Using Cosmic Neutrinos

Multimessenger Search for the Sources of Cosmic Rays Using Cosmic Neutrinos

Cosmic Neutrinos and the Cosmic-Ray Accelerator TXS 0506+056

IceCube: A New Window on the Universe

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