TY - JOUR
T1 - Neutrino events at IceCube and the Fermi bubbles
AU - Lunardini, Cecilia
AU - Razzaque, Soebur
AU - Theodoseau, Kristopher T.
AU - Yang, Lili
PY - 2014/7/21
Y1 - 2014/7/21
N2 - We discuss the possibility that the IceCube neutrino telescope might be observing the Fermi bubbles. If the bubbles discovered in gamma rays originate from accelerated protons, they should be strong emitters of high energy (GeV) neutrinos. These neutrinos are detectable as showerlike or tracklike events at a Km3 neutrino observatory. For a primary cosmic ray flux with spectrum E-2.1 and cutoff energy at or above 10 PeV, the Fermi bubble flux substantially exceeds the atmospheric background, and could account for up to ∼4-5 of the 28 events detected above ∼30TeV at IceCube. Running the detector for ∼5-7 more years should be sufficient to discover this flux at high significance. For a primary cosmic ray flux with steeper spectrum, and/or lower cutoff energy, longer running times will be required to overcome the background.
AB - We discuss the possibility that the IceCube neutrino telescope might be observing the Fermi bubbles. If the bubbles discovered in gamma rays originate from accelerated protons, they should be strong emitters of high energy (GeV) neutrinos. These neutrinos are detectable as showerlike or tracklike events at a Km3 neutrino observatory. For a primary cosmic ray flux with spectrum E-2.1 and cutoff energy at or above 10 PeV, the Fermi bubble flux substantially exceeds the atmospheric background, and could account for up to ∼4-5 of the 28 events detected above ∼30TeV at IceCube. Running the detector for ∼5-7 more years should be sufficient to discover this flux at high significance. For a primary cosmic ray flux with steeper spectrum, and/or lower cutoff energy, longer running times will be required to overcome the background.
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U2 - 10.1103/PhysRevD.90.023016
DO - 10.1103/PhysRevD.90.023016
M3 - Article
AN - SCOPUS:84904880406
SN - 1550-7998
VL - 90
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 2
M1 - 023016
ER -