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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:4
UID:UW-Physics-Event-7942
DTSTART:20230302T203000Z
DTEND:20230302T213000Z
DTSTAMP:20260414T054759Z
LAST-MODIFIED:20230301T222402Z
LOCATION:https://uwmadison.zoom.us/j/92984604372?pwd=WTZXUmg0T1M0bGZNc
 jlFQ25PSnVFZz09
SUMMARY:Where are Milky Way’s Hadronic PeVatrons?\, NPAC (Nuclear/Pa
 rticle/Astro/Cosmo) Forum\, Takahiro Sudo\, Ohio State University
DESCRIPTION:Observations of the Milky Way at TeV–PeV energies reveal
  a bright diffuse flux of hadronic cosmic rays and also bright point s
 ources of gamma rays. If the gamma-ray sources are hadronic cosmic-ray
  accelerators\, then they must also be neutrino sources. However\, no 
 neutrino sources have been detected. Where are they? We introduce a ne
 w population-based approach to probe Milky Way hadronic PeVatrons\, de
 manding consistency between diffuse and point-source PeV-range data on
  cosmic rays\, gamma rays\, and neutrinos. For the PeVatrons\,
\ntwo e
 xtreme scenarios are allowed: (1) the hadronic cosmic-ray accelerators
  and the gamma-ray sources are the same objects\, so that bright neutr
 ino sources exist and improved telescopes can detect them\, versus (2)
  the hadronic cosmic-ray accelerators and the gamma-ray sources are di
 stinct\, so that there are no detectable neutrino sources. The latter 
 case is possible if hadronic accelerators have sufficiently thin colum
 n densities. We quantify present constraints and future prospects\, sh
 owing how to reveal the nature of the hadronic PeVatrons
URL:https://www.physics.wisc.edu/events/?id=7942
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