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On the potential of Cherenkov Telescope Arrays and KM3 Neutrino Telescopes for the detection of extended sources

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arxiv 1803.03565 v1 pith:LH3MWJYK submitted 2018-03-09 astro-ph.HE

classification astro-ph.HE
keywords gammaneutrinosourcesgamma-raykm3nettelescopeanalysischerenkov
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We discuss the discovery potential of extended very-high-energy (VHE) neutrino sources by the future KM3 Neutrino Telescope (KM3NeT) in the context of the constraining power of the Cherenkov Telescope Array (CTA), designed for deep surveys of the sky in VHE gamma rays. The study is based on a comparative analysis of sensitivities of KM3NeT and CTA. We show that a minimum gamma-ray energy flux of E^2{\phi}_{\gamma}(10 TeV) > 1x10^{-12} TeV cm^{-2} s^{-1} is required to identify a possible neutrino counterpart with a 3{\sigma} significance and 10 years of KM3NeT observations with upgoing muons, if the source has an angular size of R_{src} = 0.1 deg and emits gamma rays with an E^{-2} energy spectrum through a full hadronic mechanism. This minimum gamma-ray flux is increased to the level of E^2{\phi}_{\gamma}(10 TeV) > 2x10^{-11} TeV cm^{-2} s^{-1} in case of sources with radial extension of R_{src} = 2.0 deg. The analysis methods are applied to the supernova remnant RX J1713.7-3946 and the Galactic Center Ridge, as well as to the recent HAWC catalog of multi-TeV gamma-ray sources.

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Cited by 1 Pith paper

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  1. Evidences of low-diffusion bubbles around Galactic pulsars

    astro-ph.HE 2019-08 conditional novelty 6.0 of 10

    A sample of 27 Galactic pulsar wind nebulae shows a diffusion coefficient about two orders of magnitude below the Galactic average, implying large low-diffusion bubbles around these pulsars.

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