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24.11.2023 / 10:00 / Zeuthen, SR5 | Villa
Astroparticle SeminarAlison Mitchell | Gamma-ray insights into the origins of galactic cosmic rays
Alison Mitchell
Within our Milky Way Galaxy, particles are known to be accelerated to energies beyond the so-called Cosmic Ray knee, a spectral break at ~3 PeV in the all particle cosmic ray spectrum. However, evidence for the particle accelerators that reach PeV energies - PeVatrons - has proven elusive. Only within the last few years have astrophysical sources of gamma-rays above 100 TeV been identified; gamma-rays produced through interactions of particles with PeV energies. Many of these sources are associated with the most energetic pulsars known. In this talk, I will cover recent gamma-ray insights into a few different source classes that are known to accelerate galactic cosmic rays. In particular, progress towards open questions concerning the energies reached and the locations of particle acceleration will be highlighted. An outlook towards anticipated developments with current and forthcoming facilities will be given.
More Information: https://indico.desy.de/category/698/
