<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Petropoulou, Maria</style></author><author><style face="normal" font="default" size="100%">Oikonomou, Foteini</style></author><author><style face="normal" font="default" size="100%">Mastichiadis, Apostolos</style></author><author><style face="normal" font="default" size="100%">Murase, Kohta</style></author><author><style face="normal" font="default" size="100%">Padovani, Paolo</style></author><author><style face="normal" font="default" size="100%">Vasilopoulos, Georgios</style></author><author><style face="normal" font="default" size="100%">Giommi, Paolo</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Comprehensive Multimessenger Modeling of the Extreme Blazar 3HSP J095507.9+355101 and Predictions for IceCube</style></title><short-title><style face="normal" font="default" size="100%">The Astrophysical Journal</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">1100</style></keyword><keyword><style  face="normal" font="default" size="100%">158</style></keyword><keyword><style  face="normal" font="default" size="100%">164</style></keyword><keyword><style  face="normal" font="default" size="100%">637</style></keyword><keyword><style  face="normal" font="default" size="100%">739</style></keyword><keyword><style  face="normal" font="default" size="100%">Astrophysics - High Energy Astrophysical Phenomena</style></keyword><keyword><style  face="normal" font="default" size="100%">BL Lacertae objects</style></keyword><keyword><style  face="normal" font="default" size="100%">Blazars</style></keyword><keyword><style  face="normal" font="default" size="100%">Gamma-rays</style></keyword><keyword><style  face="normal" font="default" size="100%">High energy astrophysics</style></keyword><keyword><style  face="normal" font="default" size="100%">Neutrino astronomy</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2020</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2020/08/1</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://ui.adsabs.harvard.edu/abs/2020ApJ...899..113P</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">IOP</style></publisher><volume><style face="normal" font="default" size="100%">899</style></volume><pages><style face="normal" font="default" size="100%">113</style></pages><isbn><style face="normal" font="default" size="100%">0004-637X</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">3HSP J095507.9+355101 is an extreme blazar that has been possibly associated with a high-energy neutrino (IceCube-200107A) detected 1 day before the blazar was found to undergo a hard X-ray flare. We perform a comprehensive study of the predicted multimessenger emission from 3HSP J095507.9+355101 during its recent X-ray flare, but also in the long term. We focus on one-zone leptohadronic models, but we also explore alternative scenarios: (i) a blazar-core model, which considers neutrino production in the inner jet, close to the supermassive black hole; (ii) a hidden external-photon model, which considers neutrino production in the jet through interactions with photons from a weak broad line region; (iii) a proton-synchrotron model, where high-energy protons in the jet produce γ-rays via synchrotron; and (iv) an intergalactic cascade scenario, where neutrinos are produced in the intergalactic medium by interactions of a high-energy cosmic-ray beam escaping the jet. The Poisson probability to detect a single muon neutrino in 10 years from 3HSP J095507.9+355101 with the real-time IceCube alert analysis is ∼1% (3%) for the most optimistic one-zone leptohadronic model (the multi-zone blazar-core model). Meanwhile, detection of a single neutrino during the 44-day-long high X-ray flux-state period following the neutrino detection is 0.06%, according to our most optimistic leptohadronic model. The most promising scenarios for neutrino production also predict strong intrasource γ-ray attenuation above ∼100 GeV. If the association is real, then IceCube-Gen2 and other future detectors should be able to provide additional evidence for neutrino production in 3HSP J095507.9+355101 and other extreme blazars.</style></abstract></record></records></xml>