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A Multimessenger Picture of the Flaring Blazar TXS 0506+056: implications for High-Energy Neutrino Emission and Cosmic Ray Acceleration
- Source :
- Astrophys.J., Astrophys.J., 2018, 864 (1), pp.84. ⟨10.3847/1538-4357/aad59a⟩
- Publication Year :
- 2018
-
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.<br />23 pages, 6 figures, 9 tables, submitted to ApJ
- Subjects :
- Astrophysics::High Energy Astrophysical Phenomena
Hadron
galaxies: active
FOS: Physical sciences
Cosmic ray
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
blazar: emission
7. Clean energy
01 natural sciences
GLAST
IceCube
emission: model
X-ray
particle: acceleration
neutrino: production
cascade: electromagnetic
Acceleration
neutrino: energy
0103 physical sciences
gamma rays: galaxies
cosmic radiation: UHE
cosmic radiation: acceleration
Blazar
010303 astronomy & astrophysics
BL Lacertae objects: individual
Physics
High Energy Astrophysical Phenomena (astro-ph.HE)
COSMIC cancer database
hybrid
010308 nuclear & particles physics
hadronic component
neutrinos
Astronomy and Astrophysics
BL Lacertae objects: general
radiation mechanisms: non-thermal
Particle acceleration
messenger
observatory
monitoring
Compton scattering: inverse
13. Climate action
Space and Planetary Science
gamma ray
High Energy Physics::Experiment
Neutrino
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Astrophysics - High Energy Astrophysical Phenomena
Fermi Gamma-ray Space Telescope
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Astrophys.J., Astrophys.J., 2018, 864 (1), pp.84. ⟨10.3847/1538-4357/aad59a⟩
- Accession number :
- edsair.doi.dedup.....670eb415002e65992f4545ff6b31063a