25 November 2021Séminaire – Alexis Coleiro (APC)

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Multimessenger astronomy with neutrinos : what have we learned so far ?

Abstract

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 (neutron stars and black holes). 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 of high-energy neutrinos in spatial and time coincidence with high-energy sources (in particular with blazars), which could be the first detections of high-energy neutrino sources. Future projects and multimessenger strategies will be tackled.