The power of realtime multi-messenger astronomy: resolving the high-energy neutrino sky
Marek Kowalski (HU Berlin/DESY)

During the last years we have witnessed several breakthroughs in the field of astroparticle physics and astronomy, ranging from the detection of optical counterparts of the gravitational wave sources to the first likely identification of a source of high-energy cosmic neutrinos – a bright gamma-ray Blazar. And most recently, we have traced back a high-energy neutrino detected by IceCube to a Tidal-Disruption Event, providing first evidence that these objects might be the sights of extreme particle acceleration.
All these observations have in common that they capture transient phenomena, with multi-messenger follow-up observations required to be performed in near realtime. In my talk I will discuss the technological challenges of the field, our solutions as well as what we have learned about the sources of cosmic neutrinos neutrino from our new observations. I will also present future projects that promise to become game changers for the field of high-energy multimessenger astronomy.