Seminar ICAP Emmanuel Frion : « Stochasticity in a collapsing Universe » Alexander Korochkin : « Searching for an additional extragalactic background light component with blazar spectra » Tanmay Vachaspati : « Primordial magnetic fields » Ernesto Lopez Fune : « Two-neutrino double electron capture with XENON1T » Jens-Kristian Krogager : « High-redshift interstellar medium towards a lensed quasar »