Abstract:  We are living exciting times: we are now able to probe the most violent events of the Universe with diverse messengers (cosmic rays, neutrinos, photons and gravitational waves). However, no source has been coincidently observed yet in neutrinos and gravitational waves. We will discuss how a combined high-energy neutrino and gravitational wave signal could be produced in some specific sources, and assess the detection perspectives of such events. Another challenge to complete the multi-messenger picture resides in the highest energies, as no ultra-high energy neutrinos have been observed yet. This challenge could be undertaken by the GRAND (Giant Radio Array for Neutrino Detection) project, which aims at detecting ultra-high energy particles, with a colossal array of 200'000 antennas over 200'000 km2, split into ~20 sub-arrays of ~10'000 km2 deployed worldwide. We will introduce the concept of the experiment and present our on-going work on the first 300-antenna prototype array, GRANDProto300. 

Host:  Stephanie Wissel

Astro Colloquium and 'coffee & cookies' Department gathering (3:30-4:00pm)
https://psu.zoom.us/j/94153970341