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SUMMARY:Radial gradients in cosmic-ray transport: Implications for TeV gam
 ma and neutrino astronomy.
DTSTART;VALUE=DATE-TIME:20151027T082000Z
DTEND;VALUE=DATE-TIME:20151027T083500Z
DTSTAMP;VALUE=DATE-TIME:20260313T205649Z
UID:indico-contribution-904@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Daniele Gaggero (SISSA)\nThe Fermi-LAT measurements 
 of the diffuse Galactic gamma-ray emission reveal a hardening of the cosmi
 c-ray (CR) spectrum with decreasing Galactocentric radius. This result can
  be the signature of different  CR trasport properties in the inner Galaxy
 \, and in particular a harder rigidity scaling of the diffusion coefficien
 t.\nWe model this effect with DRAGON and we provide a good description of 
 both Fermi-LAT gamma-ray data in the most relevant sky windows and local c
 osmic-ray measurements by PAMELA\, AMS-02 and CREAM. \n\nOur model is in  
 remarkably good agreement with the gamma-ray flux measured by MILAGRO at 1
 5 TeV from the inner Galactic plane region\, and with H.E.S.S. data from t
 he Galactic ridge.\n\nOn the neutrino side\, we show that our scenario pro
 vides an explanation for a significant fraction of the astrophysical flux 
 measured by IceCube above 25 TeV\; moreover\, we discuss how the neutrino 
 telescopes in the Northern hemisphere (ANTARES and the future KM3NeT)\, be
 tter positioned for the observation of the Galactic Ridge\, will be able t
 o confirm or constrain our picture.\n\nhttps://indico.icrr.u-tokyo.ac.jp/e
 vent/23/contributions/904/
LOCATION: Room 5.6
URL:https://indico.icrr.u-tokyo.ac.jp/event/23/contributions/904/
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