Physics Letters B 763 (2016) 179–185
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Physics Letters B
www.elsevier.com/locate/physletb
A comparison of the cosmic-ray energy scales of Tunka-133 and
KASCADE-Grande via their radio extensions Tunka-Rex and LOPES
Tunka-Rex and LOPES Collaborations
W.D. Apel
a
, J.C. Arteaga-Velázquez
b
, L. Bähren
c
, P.A. Bezyazeekov
d
, K. Bekk
a
,
M. Bertaina
e
, P.L. Biermann
f
, J. Blümer
a,g
, H. Bozdog
a
, I.M. Brancus
h
, N.M. Budnev
d
,
E. Cantoni
e,i
, A. Chiavassa
e
, K. Daumiller
a
, V. de Souza
j
, F. Di Pierro
e
, P. Doll
a
, R. Engel
a
,
H. Falcke
c,f,k
, O. Fedorov
d
, B. Fuchs
g
, H. Gemmeke
l
, O.A. Gress
d
, C. Grupen
m
, A. Haungs
a
,
D. Heck
a
, R. Hiller
a,∗
, J.R. Hörandel
k
, A. Horneffer
f
, D. Huber
g
, T. Huege
a
, P.G. Isar
n
,
K.-H. Kampert
o
, D. Kang
g
, Y. Kazarina
d
, M. Kleifges
l
, E.E. Korosteleva
p
, D. Kostunin
a
,
O. Krömer
l
, J. Kuijpers
k
, L.A. Kuzmichev
p
, K. Link
g
, N. Lubsandorzhiev
p
, P. Łuczak
q
,
M. Ludwig
g
, H.J. Mathes
a
, M. Melissas
g
, R.R. Mirgazov
d
, R. Monkhoev
d
, C. Morello
i
,
J. Oehlschläger
a
, E.A. Osipova
p
, A. Pakhorukov
d
, N. Palmieri
g
, L. Pankov
d
, T. Pierog
a
,
V.V. Prosin
p
, J. Rautenberg
o
, H. Rebel
a
, M. Roth
a
, G.I. Rubtsov
r
, C. Rühle
l
, A. Saftoiu
h
,
H. Schieler
a
, A. Schmidt
l
, S. Schoo
a
, F.G. Schröder
a
, O. Sima
s
, G. Toma
h
, G.C. Trinchero
i
,
A. Weindl
a
, R. Wischnewski
t
, J. Wochele
a
, J. Zabierowski
q
, A. Zagorodnikov
d
, J.A. Zensus
f
a
Institut für Kernphysik, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
b
Instituto de Física y Matemáticas, Universidad Michoacana, Morelia, Michoacán, Mexico
c
ASTRON, Dwingeloo, The Netherlands
d
Institute of Applied Physics ISU, Irkutsk, Russia
e
Dipartimento di Fisica, Università degli Studi di Torino, Torino, Italy
f
Max-Planck-Institut für Radioastronomie, Bonn, Germany
g
Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
h
National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
i
Osservatorio Astrofisico di Torino, INAF Torino, Torino, Italy
j
Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, Brazil
k
Department of Astrophysics, Radboud University Nijmegen, AJ Nijmegen, The Netherlands
l
Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
m
Faculty of Natural Sciences and Engineering, Universität Siegen, Siegen, Germany
n
Institute for Space Sciences, Bucharest-Magurele, Romania
o
Fachbereich C, Physik, Bergische Universität Wuppertal, Wuppertal, Germany
p
Skobeltsyn Institute of Nuclear Physics MSU, Moscow, Russia
q
Department of Astrophysics, National Centre for Nuclear Research, Łód
´
z, Poland
r
Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
s
Department of Physics, University of Bucharest, Bucharest, Romania
t
DESY, Zeuthen, Germany
a r t i c l e i n f o a b s t r a c t
Article history:
Received
6 June 2016
Received
in revised form 27 September
2016
Accepted
13 October 2016
Available
online 18 October 2016
Editor:
S. Dodelson
The radio technique is a promising method for detection of cosmic-ray air showers of energies around
100 PeV and higher with an array of radio antennas. Since the amplitude of the radio signal can be mea-
sured
absolutely and increases with the shower energy, radio measurements can be used to determine
the air-shower energy on an absolute scale. We show that calibrated measurements of radio detectors
operated in coincidence with host experiments measuring air showers based on other techniques can
be used for comparing the energy scales of these host experiments. Using two approaches, first via
*
Corresponding author.
E-mail
address: roman.hiller@kit.edu (R. Hiller).
http://dx.doi.org/10.1016/j.physletb.2016.10.031
0370-2693/
© 2016 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by
SCOAP
3
.