Multimessenger astronomy with neutrinos : what have we learned ?

Séminaire IPAG de Alexis Coleiro (APC), jeudi 17 janvier 2019 à 11h00, salle Manuel Forestini

The recent detection of high-energy astrophysical neutrinos and gravitational waves open a new era in multimessenger astronomy. Exploring high-energy sources with these new messengers and electromagnetic radiation provides new insights into the physical processes at work in the close environment of compact objects. In this talk, I will address the scientific motivation to search for high-energy neutrinos and their connection with cosmic rays. The challenges of their detection will be explained before presenting the latest results. In particular, I will discuss the lessons learned from the detection by IceCube of a high-energy neutrino in spatial coincidence with the gamma-ray blazar TXS 0506+056, which could be the first detection of a high-energy neutrino source. Future projects and multimessenger strategies will be tackled.