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NPAC (Nuclear/Particle/Astro/Cosmo) Forums

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Organized by: Prof. Lu Lu


Events During the Week of February 25th through March 3rd, 2024

Monday, February 26th, 2024

No events scheduled

Tuesday, February 27th, 2024

No events scheduled

Wednesday, February 28th, 2024

No events scheduled

Thursday, February 29th, 2024

New probes of ultrahigh energy cosmic ray source evolution
Time: 2:30 pm - 3:30 pm
Place: Supernova @WIPAC
Speaker: Marco Muzio, Penn State University
Abstract: Despite first observing cosmic rays with energies above an EeV (10^18 eV) in the 1960s, the source of these particles remains an open question. Modern observatories, in particular the Pierre Auger Observatory and Telescope Array, have firmly established that the cosmic ray spectrum continues up to ~10^20.3 eV and have significantly advanced our understanding of these particles. However, limited statistics, uncertainties in particle physics, and significant deflections in the Galactic magnetic field have made progress towards discovering their astrophysical source extremely challenging. One key astrophysical input needed to understand ultrahigh energy cosmic ray data is the distribution of their sources, or the source evolution. In this talk, I will focus on multimessenger observations which have the potential to pin down the source evolution for the very first time.
Host: Lu Lu
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Friday, March 1st, 2024

No events scheduled