1,721,672 research outputs found
KM3Net/Arca expectations for the low latitude bubbles
No full textIn 2010 it was pointed out that the Fermi-LAT telescope registered high-energy gamma-ray emission from giant outflows symmetric respect to the Galactic plane which exceeded the expected backgrounds. The region were this emission was observed, extending up to 9 kpc from the Galactic plane and covering a total solid angle of ~1 sr, was afterward called: Fermi Bubbles. This observation could be interpreted as the trace of an outburst activity of the central supermassive black hole and the collected gamma rays were attributed to the non-thermal emission from cosmic rays accelerated in this region. Since this gamma-ray observations several hypotheses were made about the leptonic or hadronic origin of this emission. In 2016 a new analysis by the HAWC collaboration provided stringent upper limits on the gamma-ray flux from the Northern Fermi Bubble in the energy range of teens of TeV. These limits represent a constrain also for a possible neutrino counterpart making more difficult the observation through high-energy neutrino telescopes. However, in 2017, a study of the Fermi-LAT collaboration focused on the Fermi Bubbles region below 10 degrees of latitude produced the observation of a different spectral behaviour. The resulting spectral energy distribution is harder than the one obtained from the whole Fermi Bubbles. This allows for better observational possibilities for neutrino telescopes. Here we show the expectations for KM3NeT/ARCA
Sensitivity of the KM3NeT detector to a neutrino flux from the Fermi Bubbles
No full textThe Fermi Large Area Telescope data has provided evidence for a high-intensity emission of high-energy gamma rays with a E-2 spectrum from two large bubbles above and below the Galactic Center. Hadronic mechanisms were proposed for this gamma-ray emission making the Fermi bubbles promising source candidates of high-energy neutrino emission. In this work preliminary simulation results regarding the detectability of high-energy neutrinos from the Fermi bubbles with the future multi-km(3) neutrino telescope KM3NeT are presented
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