%0 Generic %1 buson2022beginning %A Buson, Sara %A Tramacere, Andrea %A Pfeiffer, Leonard %A Oswald, Lenz %A de Menezes, Raniere %A Azzollini, Alessandra %A Ajello, Marco %D 2022 %K blazar icecube neutrino %T Beginning a journey across the universe: the discovery of extragalactic neutrino factories %U http://arxiv.org/abs/2207.06314 %X Neutrinos are the most elusive particles in the Universe, capable of traveling nearly unimpeded across it. Despite the vast amount of data collected, a long standing and unsolved issue is still the association of high-energy neutrinos with the astrophysical sources that originate them. Amongst the candidate sources of neutrinos there are blazars, a class of extragalactic sources powered by supermassive black holes that feed highly relativistic jets, pointed towards the Earth. Previous studies appear controversial, with several efforts claiming a tentative link between high-energy neutrino events and individual blazars, and others putting into question such relation. In this work we show that blazars are unambiguously associated with high-energy astrophysical neutrinos at unprecedented level of confidence, i.e. chance probability of 6 x 10^-7. Our statistical analysis provides the observational evidence that blazars are astrophysical neutrino factories and hence, extragalactic cosmic-ray accelerators.

@misc{buson2022beginning, abstract = {Neutrinos are the most elusive particles in the Universe, capable of traveling nearly unimpeded across it. Despite the vast amount of data collected, a long standing and unsolved issue is still the association of high-energy neutrinos with the astrophysical sources that originate them. Amongst the candidate sources of neutrinos there are blazars, a class of extragalactic sources powered by supermassive black holes that feed highly relativistic jets, pointed towards the Earth. Previous studies appear controversial, with several efforts claiming a tentative link between high-energy neutrino events and individual blazars, and others putting into question such relation. In this work we show that blazars are unambiguously associated with high-energy astrophysical neutrinos at unprecedented level of confidence, i.e. chance probability of 6 x 10^{-7}. Our statistical analysis provides the observational evidence that blazars are astrophysical neutrino factories and hence, extragalactic cosmic-ray accelerators.}, added-at = {2022-07-14T12:56:32.000+0200}, author = {Buson, Sara and Tramacere, Andrea and Pfeiffer, Leonard and Oswald, Lenz and de Menezes, Raniere and Azzollini, Alessandra and Ajello, Marco}, biburl = {https://www.bibsonomy.org/bibtex/225a0ed8865155b0b8732129dbaa73b7a/jnecker}, description = {[2207.06314] Beginning a journey across the universe: the discovery of extragalactic neutrino factories}, interhash = {c0854e10d537a6a8a42c76ea572b704a}, intrahash = {25a0ed8865155b0b8732129dbaa73b7a}, keywords = {blazar icecube neutrino}, note = {cite arxiv:2207.06314Comment: Published in ApJL}, timestamp = {2022-07-14T12:56:32.000+0200}, title = {Beginning a journey across the universe: the discovery of extragalactic neutrino factories}, url = {http://arxiv.org/abs/2207.06314}, year = 2022 }