Constraints on sub-GeV inelastic dark matter are derived from cosmic-ray cooling in NGC 1068 by including elastic and deep inelastic scattering in a vector-portal model.
A Multimessenger Picture of the Flaring Blazar TXS 0506+056: implications for High-Energy Neutrino Emission and Cosmic Ray Acceleration
6 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
Detection of the IceCube-170922A neutrino coincident with the flaring blazar TXS 0506+056, the first and only 3-sigma high-energy neutrino source association to date, offers a potential breakthrough in our understanding of high-energy cosmic particles and blazar physics. We present a comprehensive analysis of TXS 0506+056 during its flaring state, using newly collected Swift, NuSTAR, and X-shooter data with Fermi observations and numerical models to constrain the blazar's particle acceleration processes and multimessenger (electromagnetic and high-energy neutrino) emissions. Accounting properly for electromagnetic cascades in the emission region, we find a physically-consistent picture only within a hybrid leptonic scenario, with gamma-rays produced by external inverse-Compton processes and high-energy neutrinos via a radiatively-subdominant hadronic component. We derive robust constraints on the blazar's neutrino and cosmic-ray emissions and demonstrate that, because of cascade effects, the 0.1-100keV emissions of TXS 0506+056 serve as a better probe of its hadronic acceleration and high-energy neutrino production processes than its GeV-TeV emissions. If the IceCube neutrino association holds, physical conditions in the TXS 0506+056 jet must be close to optimal for high-energy neutrino production, and are not favorable for ultra-high-energy cosmic-ray acceleration. Alternatively, the challenges we identify in generating a significant rate of IceCube neutrino detections from TXS 0506+056 may disfavor single-zone models. In concert with continued operations of the high-energy neutrino observatories, we advocate regular X-ray monitoring of TXS 0506+056 and other blazars in order to test single-zone blazar emission models, clarify the nature and extent of their hadronic acceleration processes, and carry out the most sensitive possible search for additional multimessenger sources.
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The Gluon Condensation model fits gamma-ray spectra of TXS 0506+056 and NGC 1068 with neutrino predictions consistent with IceCube, but predicts unphysical hardening for SNR G54.1+0.3.
PBR is a proposed balloon experiment combining optical and radio detectors to validate space-based UHECR fluorescence detection and perform the first simultaneous Cherenkov-radio observations of high-altitude air showers above the cosmic-ray knee.
Alternative ISRF models produce only modest changes to the LHAASO diffuse gamma-ray fit; the associated pp neutrinos remain consistent with IceCube all-sky data and compatible with ANTARES/KM3NeT limits.
AGN (jetted and non-jetted) are viable high-energy neutrino sources, with TXS 0506+056 and NGC 1068 as the only statistically significant associations so far, while gamma-ray blazars contribute only a small fraction of the diffuse flux.
Recent high and ultrahigh energy neutrino detections open a new observational window to the universe by revealing sources and processes inaccessible via photons.
citing papers explorer
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Probing Inelastic Dark Matter via Cosmic-Ray Upscattering in NGC 1068
Constraints on sub-GeV inelastic dark matter are derived from cosmic-ray cooling in NGC 1068 by including elastic and deep inelastic scattering in a vector-portal model.
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A Unified Explanation of Gamma-Ray and Neutrino Spectra from Astrophysical Sources Based on the Gluon Condensation Model
The Gluon Condensation model fits gamma-ray spectra of TXS 0506+056 and NGC 1068 with neutrino predictions consistent with IceCube, but predicts unphysical hardening for SNR G54.1+0.3.
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POEMMA-Balloon with Radio: A multi-messenger, multi-detector balloon payload
PBR is a proposed balloon experiment combining optical and radio detectors to validate space-based UHECR fluorescence detection and perform the first simultaneous Cherenkov-radio observations of high-altitude air showers above the cosmic-ray knee.
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TeV-PeV Gamma-ray and Neutrino Emission in the Galactic Plane
Alternative ISRF models produce only modest changes to the LHAASO diffuse gamma-ray fit; the associated pp neutrinos remain consistent with IceCube all-sky data and compatible with ANTARES/KM3NeT limits.
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Active Galactic Nuclei as high-energy neutrino sources
AGN (jetted and non-jetted) are viable high-energy neutrino sources, with TXS 0506+056 and NGC 1068 as the only statistically significant associations so far, while gamma-ray blazars contribute only a small fraction of the diffuse flux.
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Particle Astrophysics with High and Ultrahigh Energy Neutrinos
Recent high and ultrahigh energy neutrino detections open a new observational window to the universe by revealing sources and processes inaccessible via photons.