July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Multi-Messenger Aspects of Cosmic Neutrinos

Aug 1, 2015, 4:30 PM
World Forum Theater (World Forum)

World Forum Theater

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Highlight talk NU-TH High-Light Talks


Markus Ahlers


I will discuss the recent observation of TeV to PeV neutrinos by the IceCube Cherenkov telescope in the context of multi-messenger astronomy. The corresponding energy range of hadronic gamma-rays is not directly accessible by extragalactic gamma-ray astronomy due to interactions with cosmic radiation backgrounds. Nevertheless, the isotropic sub-TeV gamma-ray background observed by Fermi-LAT contains indirect information from secondary emission produced in electromagnetic cascades and constrains hadronic emission scenarios. On the other hand, observation of PeV gamma-rays would provide a smoking-gun signal for Galactic emission. Interestingly, the overall energy density of the observed neutrino flux is close to a theoretical limit for neutrino production in the sources of ultra-high energy cosmic rays and might indicate a common origin of these phenomena. I will highlight various multi-messenger relations involving cosmic neutrinos and proposed source scenarios.
Registration number following "ICRC2015-I/" 374
Collaboration -- not specified --

Primary author

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