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000449836 005__ 20211222091333.0
000449836 0247_ $$2INSPIRETeX$$aRodrigues:2020fbu
000449836 0247_ $$2inspire$$ainspire:1815877
000449836 0247_ $$2arXiv$$aarXiv:2009.04026
000449836 0247_ $$2datacite_doi$$a10.3204/PUBDB-2020-04053
000449836 037__ $$aPUBDB-2020-04053
000449836 041__ $$aEnglish
000449836 088__ $$2arXiv$$aarXiv:2009.04026
000449836 1001_ $$0P:(DE-H253)PIP1028911$$ade Sousa Ferreira Rodrigues, Xavier$$b0$$eCorresponding author$$udesy
000449836 245__ $$aMulti-wavelength and neutrino emission from blazar PKS 1502+106
000449836 260__ $$c2020
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000449836 500__ $$a13 pages, 5 figures
000449836 520__ $$aIn July of 2019, the IceCube experiment detected a high-energy neutrino from the direction of the powerful blazar PKS 1502+106. We perform multi-wavelength and multi-messenger modeling of this source, using a fully self-consistent one-zone model, which includes the contribution of external radiation fields typical of flat-spectrum radio quasars (FSRQs). We identify three different activity states of the blazar: the quiescent state, and two distinct flaring states with hard and soft gamma-ray spectra. We find two hadronic models that can both describe the multi-wavelength emission during all three states: a leptohadronic model with a contribution from photo-hadronic processes to X-rays and high-energy gamma rays, and a proton synchrotron model, where the emission from keV to 10 GeV comes from proton synchrotron radiation. Both models predict a substantial neutrino flux, which is correlated with the gamma-ray and soft X-ray fluxes. Our results are compatible with the detection of a neutrino during the quiescent state, based on event rate statistics. Upon an extensive parameter scan, we conclude that the soft X-ray fluxes observed during bright gamma-ray flares strongly suggest a hadronic contribution, which can be interpreted as additional evidence for cosmic ray acceleration in the source independently of neutrino observations. We find that more arguments can be made in favor of the leptohadronic model vis-a-vis the proton synchrotron scenario, such as a lower energetic demand during the quiescent state and the fact that the same model has also been shown to describe the observation of neutrinos from blazar TXS 0506+056. The leptohadronic model would be disfavored for flaring states of PKS 1502+106 if no IceCube events were found from the direction of the source before 2010, which would require an archival search.
000449836 536__ $$0G:(DE-HGF)POF3-613$$a613 - Matter and Radiation from the Universe (POF3-613)$$cPOF3-613$$fPOF III$$x0
000449836 536__ $$0G:(EU-Grant)646623$$aNEUCOS - Neutrinos and the origin of the cosmic rays (646623)$$c646623$$fERC-2014-CoG$$x1
000449836 588__ $$aDataset connected to INSPIRE
000449836 650_7 $$2INSPIRE$$amodel: hadronic
000449836 650_7 $$2INSPIRE$$aneutrino: flux
000449836 650_7 $$2INSPIRE$$acosmic radiation: acceleration
000449836 650_7 $$2INSPIRE$$agamma ray: energy spectrum
000449836 650_7 $$2INSPIRE$$ablazar
000449836 650_7 $$2INSPIRE$$aphoton hadron
000449836 650_7 $$2INSPIRE$$aproton synchrotron
000449836 650_7 $$2INSPIRE$$aradio wave
000449836 650_7 $$2INSPIRE$$aX-ray: flux
000449836 650_7 $$2INSPIRE$$aIceCube
000449836 650_7 $$2INSPIRE$$amessenger
000449836 650_7 $$2INSPIRE$$asynchrotron radiation
000449836 650_7 $$2INSPIRE$$astatistics
000449836 650_7 $$2INSPIRE$$aquasar
000449836 693__ $$0EXP:(DE-MLZ)NOSPEC-20140101$$5EXP:(DE-MLZ)NOSPEC-20140101$$eNo specific instrument$$x0
000449836 7001_ $$0P:(DE-H253)PIP1022301$$aGarrappa, Simone$$b1$$udesy
000449836 7001_ $$0P:(DE-H253)PIP1023210$$aGao, Shan$$b2$$udesy
000449836 7001_ $$0P:(DE-H253)PIP1086596$$aPaliya, Vaidehi S.$$b3$$udesy
000449836 7001_ $$0P:(DE-H253)PIP1006092$$aFranckowiak, Anna$$b4$$udesy
000449836 7001_ $$0P:(DE-H253)PIP1021242$$aWinter, Walter$$b5$$udesy
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000449836 9141_ $$y2020
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