by
David Berge(DESY and Humboldt-University of Berlin)
→
Europe/London
Zoom
Zoom
https://ukri.zoom.us/j/92262469770
Description
Using photons, neutrinos, and gravitational waves to observe the same cosmic event or object are like probing the Higgs boson in different final states at the LHC: in multi-messenger astronomy, we are using all available messengers to probe the underlying physics of a cosmic event. This cross-cutting approach to astronomy has recently resulted in a number of breakthroughs, like the association of a short gamma-ray burst (GRB) to the merger of two neutron stars followed by a radioactive glow from the synthesis of heavy elements, or the coincident measurement of a gamma-ray flare with a high-energy neutrino from an Active Galactic Nucleus (AGN), which is maybe a first hint of what the most powerful charged particle accelerators in the universe are.
I will explain how cosmic gamma rays, neutrinos, and gravitational waves are measured, why GRBs and AGNs are so interesting for astroparticle physicists and astronomers, and I will review recent multi-messenger astronomy highlights, focussing on measurements involving cosmic gamma rays. I will conclude by giving an outlook into the (bright) multi-messenger future.