Correlation of IceCube neutrinos with the 2MASS Redshift Survey. (arXiv:1908.04857v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Sclafani_S/0/1/0/all/0/1">Stephen Sclafani</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Neilson_N/0/1/0/all/0/1">Naoko Kurahashi Neilson</a> (for the IceCube Collaboration)
Since the detection of high energy astrophysical neutrinos in IceCube, there
has been a search for their sources. Although recent evidence of neutrinos from
a flaring blazar could explain some of the neutrino flux, sources for the
remainder are still unknown. This analysis searches for neutrinos produced via
interactions between diffuse intergalactic Ultra-High Energy Cosmic Rays
(UHECR) and matter. In this work the local galaxy density serves as the target
for cosmic ray interactions, thus neutrinos produced from these interactions
are expected to trace the galaxies spatially. The spatial distribution of
galaxies within the local universe (z < 0.10) as seen in the 2MASS Redshift
Survey (2MRS) is anisotropic. Here we present an analysis that searches for the
spatial correlation between the arrival directions of neutrinos observed at the
IceCube neutrino observatory and the directions of high galaxy density in the
local universe. No such correlation was found and this analysis presents limits
on the flux of neutrinos from the local universe.
Since the detection of high energy astrophysical neutrinos in IceCube, there
has been a search for their sources. Although recent evidence of neutrinos from
a flaring blazar could explain some of the neutrino flux, sources for the
remainder are still unknown. This analysis searches for neutrinos produced via
interactions between diffuse intergalactic Ultra-High Energy Cosmic Rays
(UHECR) and matter. In this work the local galaxy density serves as the target
for cosmic ray interactions, thus neutrinos produced from these interactions
are expected to trace the galaxies spatially. The spatial distribution of
galaxies within the local universe (z < 0.10) as seen in the 2MASS Redshift
Survey (2MRS) is anisotropic. Here we present an analysis that searches for the
spatial correlation between the arrival directions of neutrinos observed at the
IceCube neutrino observatory and the directions of high galaxy density in the
local universe. No such correlation was found and this analysis presents limits
on the flux of neutrinos from the local universe.
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