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Mapping Highly-Energetic Messengers throughout the Universe

Event details of Sara Buson (Julius-Maximilians-Universität Würzburg)
Date 29 September 2021
Time 11:00 -12:00

Cosmic rays prove that our Universe hosts elusive astrophysical "monsters" capable of continuously and efficiently accelerating particles at extreme energies. High-energy photons and neutrinos may be the key to ultimately decipher the mystery of cosmic rays. In 2017, the candidate detection of neutrino emission from the direction of the gamma-ray flaring blazar TXS 0506+056 has put forward gamma-ray blazars as promising neutrino point-sources, hence cosmic-ray accelerators. However, to date there is neither a consistent picture for the physical mechanism nor a theoretical framework capable of convincingly explain the full set of multi-messenger observations. I will present initial encouraging steps in this multimessenger (electromagnetic and neutrino) quest and finally discuss the latest status of the field.