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Probing the origin of cosmic rays with extremely high energy neutrinos using the IceCube Observatory
Authors
MG Aartsen
R Abbasi
+98 more
M Ackermann
J Adams
JA Aguilar
M Ahlers
D Altmann
C Arguelles
J Auffenberg
X Bai
M Baker
SW Barwick
V Baum
R Bay
JJ Beatty
J Becker Tjus
KH Becker
S Benzvi
P Berghaus
D Berley
E Bernardini
A Bernhard
DZ Besson
G Binder
D Bindig
M Bissok
E Blaufuss
J Blumenthal
DJ Boersma
C Bohm
D Bose
O Botner
L Brayeur
HP Bretz
AM Brown
R Bruijn
S Böser
J Casey
M Casier
D Chirkin
A Christov
B Christy
K Clark
F Clevermann
S Coenders
S Cohen
DF Cowen
AH Cruz Silva
M Danninger
J Daughhetee
JC Davis
M Day
C De Clercq
S De Ridder
KD De Vries
M De With
P Desiati
T Deyoung
M Dunkman
JC Díaz-Vélez
R Eagan
B Eberhardt
J Eisch
S Euler
PA Evenson
O Fadiran
AR Fazely
A Fedynitch
J Feintzeig
T Feusels
K Filimonov
C Finley
T Fischer-Wasels
S Flis
A Franckowiak
K Frantzen
T Fuchs
TK Gaisser
J Gallagher
L Gerhardt
L Gladstone
T Glüsenkamp
A Goldschmidt
G Golup
JG Gonzalez
JA Goodman
DT Grandmont
D Grant
P Gretskov
JC Groh
A Groß
D Góra
C Ha
A Haj Ismail
P Hallen
A Hallgren
F Halzen
K Hanson
D Heereman
D Heinen
Publication date
16 December 2013
Publisher
eScholarship, University of California
Abstract
We have searched for extremely high energy neutrinos using data taken with the IceCube detector between May 2010 and May 2012. Two neutrino-induced particle shower events with energies around 1 PeV were observed, as reported previously. In this work, we investigate whether these events could originate from cosmogenic neutrinos produced in the interactions of ultrahigh energy cosmic rays with ambient photons while propagating through intergalactic space. Exploiting IceCube's large exposure for extremely high energy neutrinos and the lack of observed events above 100 PeV, we can rule out the corresponding models at more than 90% confidence level. The model-independent quasidifferential 90% C.L. upper limit, which amounts to E2e+ν+ν=1.2×10-7 GeV cm-2 s-1 sr-1 at 1 EeV, provides the most stringent constraint in the energy range from 10 PeV to 10 EeV. Our observation disfavors strong cosmological evolution of the highest energy cosmic-ray sources such as the Fanaroff-Riley type II class of radio galaxies. © 2013 American Physical Society
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Last time updated on 25/12/2021