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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:4
UID:UW-Physics-Event-8525
DTSTART:20231221T203000Z
DTEND:20231221T213000Z
DTSTAMP:20260414T005917Z
LAST-MODIFIED:20251001T163923Z
LOCATION:virtual via zoom https://wipac-science.zoom.us/j/94254277222?
 pwd=QVJ1dHNCaFdmYnk1Vzk2TWJuQ3RwUT09
SUMMARY:Neutrino signal from Cygnus region of the Milky Way\, NPAC (Nu
 clear/Particle/Astro/Cosmo) Forum\,  Andrii Neronov\, Ecole Polytechni
 que (Lausanne) and Astroparticle and Cosmology laboratory (Paris)
DESCRIPTION:Interactions of cosmic ray protons and nuclei in their sou
 rces and in the interstellar medium produce "hadronic" gamma-ray emiss
 ion. Gamma-rays can also be of "leptonic" origin\, i.e. originating fr
 om high-energy electrons accelerated together with protons. It is diff
 icult to distinguish between hadronic and leptonic emission mechanisms
  based on gamma-ray data alone. This can be done via detection of neut
 rinos\, because only hadronic processes lead to neutrino production. W
 e use publicly available ten-year IceCube neutrino telescope dataset t
 o demonstrate the hadronic nature of high-energy emission from the dir
 ection of Cygnus region of the Milky Way. We find a 3-sigma excess of 
 neutrino events from an extended Cygnus Cocoon\, with the flux compara
 ble to the flux of gamma-rays in the multi-TeV energy range seen by HA
 WC and LHAASO telescopes.
URL:https://www.physics.wisc.edu/events/?id=8525
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