LOPES (LOFAR Prototype Station) is an array of dipole antennas used for
detection of radio emission from air showers. It is co-located and triggered by
the KASCADE (Karlsruhe Shower Core and Array Detector) experiment, which also
provides informations about air shower properties. Even though neither LOPES
nor KASCADE are completely optimized for the detection of highly inclined
events, a significant number of showers with zenith angle larger than 50$^o$
have been detected in the radio domain, and many with very high field
strengths. Investigation of inclined showers can give deeper insight into the
nature of primary particles that initiate showers and also into the possibility
that some of detected showers are triggered by neutrinos. In this paper, we
show the example of such an event and present some of the characteristics of
highly inclined showers detected by LOPES

A. Bercuci

A. Chiavassa

A. Haungs

A. Horneffer

A. Nigl

A. Risse

A. Weindl

Abbasi

Allan

Antoni

Askaryan

B. Mitrica

Bahcall

Beck

Berezinskii

Biermann

C. Grupen

C. Meurer

C. Morello

Capelle

D. Heck

D. Zimmermann

F. Badea

F. Cossavella

F. Di Pierro

Falcke

G. C. Trinchero

G. Navarra

G. Toma

Gousset

Greisen

H. Bozdog

H. Butcher

H. Falcke

H. Gemmeke

H. J. Mathes

H. J. Mayer

H. Rebel

H. Schieler

H. Ulrich

Hill

Huege

I. M. Brancus

J. A. Zensus

J. Blümer

J. Kuijpers

J. Milke

J. Oehlschläger

J. Petrovic

J. R. Hörandel

J. van Buren

J. Wochele

J. Zabierowski

Jelley

K. Bekk

K. Daumiller

K. Singh

K.-H. Kampert

L. Bähren

M. Bertaina

M. Brüggemann

M. Petcu

M. Roth

M. Stümpert

Nagano

O. Krömer

O. Sima

P. Buchholz

P. Doll

P. L. Biermann

P. L. Ghia

R. Engel

R. Glasstetter

R. Obenland

Rachen

Röttgering

S. Buitink

S. Lafebre

S. Nehls

S. Ostapchenko

S. Over

S. Plewnia

T. Asch

T. Huege

T. Pierog

Takeda

Vietri

Völk

W. D. Apel

W. Walkowiak

Waxman

Y. Kolotaev

Zatsepin

English

arXiv

Crossref

Radio emission of highly inclined cosmic ray air showers 
measured with LOPES

Aims: The capability of radio antenna arrays to measure cosmic ray air showers with very large zenith angles is explored. This is important, since a possible neutrino detection has to fulfill two requirements. First: antennas should be able to detect very inclined cosmic ray air showers, and second: it should be possible to estimate the distance to the shower maximum, since neutrinos are most likely to travel far through the Earth's atmosphere without interaction and induce air showers close to the ground. Methods: LOPES (LOFAR PrototypE Station; LOFAR - LOw Frequency ARray), an array of dipole antennas, is used for the detection of inclined cosmic ray air showers. LOPES is co-located and triggered by the KASCADE (KArlsruhe Shower Core and Array DEtector) experiment, which also provides information on air shower properties such as electron and muon numbers on the ground, as well as the arrival direction. Radio emission of nearly vertical cosmic ray air showers has been detected by LOPES. Results: LOPES-10 (the first phase of LOPES, consisting of 10 antennas) detected a significant number of cosmic ray air showers with a zenith angle larger than 50°, and many of these have very high radio field strengths. The most inclined event that has been detected with LOPES-10 has a zenith angle of almost 80°. This is proof that the new technique is also applicable for cosmic ray air showers with high inclinations, which in the case that they are initiated close to the ground, can be a signature of neutrino events. Conclusions: Our results indicate that arrays of simple radio antennas can be used for the detection of highly inclined air showers, which might be triggered by neutrinos. In addition, we found that the radio pulse height (normalized with the muon number) for highly inclined events increases with the geomagnetic angle, which confirms the geomagnetic origin of radio emission in cosmic ray air showers

Petrovic, J.

Apel, W. D.

Asch, T.

Badea, F.

Bahren, L.

Bekk, K.

Bercuci, A.

Bertaina, M.

Biermann, P. L.

Blumer, J.

Butcher, Harvey

The Australian National University

Astronomy and Astrophysics

Radio emission of highly inclined cosmic ray air showers measured with LOPES

Contains fulltext :
                  36387.pdf ( ) (Open Access)
                
                  Contains fulltext :
                  36387.pdf (publisher's version ) (Open Access)Aims.The capability of radio antenna arrays to measure cosmic ray air showers with very large zenith angles is explored. This is important, since a possible neutrino detection has to fulfill two requirements. First: antennas should be able to detect very inclined cosmic ray air showers, and second: it should be possible to estimate the distance to the shower maximum, since neutrinos are most likely to travel far through the Earth's atmosphere without interaction and induce air showers close to the ground. Methods: LOPES (LOFAR PrototypE Station; LOFAR - LOw Frequency ARray), an array of dipole antennas, is used for the detection of inclined cosmic ray air showers. LOPES is co-located and triggered by the KASCADE (KArlsruhe Shower Core and Array DEtector) experiment, which also provides information on air shower properties such as electron and muon numbers on the ground, as well as the arrival direction. Radio emission of nearly vertical cosmic ray air showers has been detected by LOPES. Results: LOPES-10 (the first phase of LOPES, consisting of 10 antennas) detected a significant number of cosmic ray air showers with a zenith angle larger than 50°, and many of these have very high radio field strengths. The most inclined event that has been detected with LOPES-10 has a zenith angle of almost 80°. This is proof that the new technique is also applicable for cosmic ray air showers with high inclinations, which in the case that they are initiated close to the ground, can be a signature of neutrino events. Conclusions: .Our results indicate that arrays of simple radio antennas can be used for the detection of highly inclined air showers, which might be triggered by neutrinos. In addition, we found that the radio pulse height (normalized with the muon number) for highly inclined events increases with the geomagnetic angle, which confirms the geomagnetic origin of radio emission in cosmic ray air showers

Apel, W.D.

Bähren, L.

Biermann, P.L.

Blümer, J.

Bozdog, H.

Brancus, I.M.

Brüggemann, M.

Buchholz, P.

Buitink, S.J.

Butcher, H.

Chiavassa, A.

Cossavella, F.

Daumiller, K.

Pierro, F. di

Doll, P.

Engel, R.

Falcke, H.D.E.

Gemmeke, H.

Ghia, P.L.

Glasstetter, R.

Grupen, C.

Haungs, A.

Heck, D.

Hörandel, J.R.

Horneffer, K.H.A.

Huege, T.

Kampert, K.H.

Kolotaev, Y.

Krömer, O.

Kuijpers, J.M.E.

Lafebre, S.J.

Mathes, H.J.

Mayer, H.J.

Meurer, C.

Milke, J.

Mitrica, B.

Morello, C.

Navarra, G.

Nehls, S.

Nigl, A.

Obenland, R.

Oehlschläger, J.

Ostapchenko, S.

Over, S.

Petcu, M.

Pierog, T.

Plewnia, S.

Rebel, H.

Risse, A.

Roth, M.

Schieler, H.

Sima, O.

Singh, K.

Stümpert, M.

Toma, G.

Trinchero, G.C.

Ulrich, H.

Buren, J. van

Walkowiak, W.

Weindl, A.

Wochele, J.

Zabierowski, J.

Zensus, J.A.

Zimmermann, D.

Radboud Repository

Aims.The capability of radio antenna arrays to measure cosmic ray air showers with very large zenith angles is explored. This is important, since a possible neutrino detection has to fulfill two requirements. First: antennas should be able to detect very inclined cosmic ray air showers, and second: it should be possible to estimate the distance to the shower maximum, since neutrinos are most likely to travel far through the Earth's atmosphere without interaction and induce air showers close to the ground. Methods: LOPES (LOFAR PrototypE Station; LOFAR - LOw Frequency ARray), an array of dipole antennas, is used for the detection of inclined cosmic ray air showers. LOPES is co-located and triggered by the KASCADE (KArlsruhe Shower Core and Array DEtector) experiment, which also provides information on air shower properties such as electron and muon numbers on the ground, as well as the arrival direction. Radio emission of nearly vertical cosmic ray air showers has been detected by LOPES. Results: LOPES-10 (the first phase of LOPES, consisting of 10 antennas) detected a significant number of cosmic ray air showers with a zenith angle larger than 50°, and many of these have very high radio field strengths. The most inclined event that has been detected with LOPES-10 has a zenith angle of almost 80°. This is proof that the new technique is also applicable for cosmic ray air showers with high inclinations, which in the case that they are initiated close to the ground, can be a signature of neutrino events. Conclusions: .Our results indicate that arrays of simple radio antennas can be used for the detection of highly inclined air showers, which might be triggered by neutrinos. In addition, we found that the radio pulse height (normalized with the muon number) for highly inclined events increases with the geomagnetic angle, which confirms the geomagnetic origin of radio emission in cosmic ray air showers

NARCIS 

Aims.The capability of radio antenna arrays to measure cosmic 
ray air showers with very large zenith angles is explored.
This is important, since a possible neutrino detection has to fulfill two 
requirements. First: antennas should be able to detect very inclined 
cosmic ray 
air showers, and second: it should be possible to estimate the distance to 
the shower maximum, since neutrinos are most likely to 
travel far through the Earth's atmosphere without interaction and induce
air showers close to the ground.
        Methods.LOPES (LOFAR PrototypE 
Station; LOFAR – LOw Frequency ARray), an array of dipole antennas, is 
used for the detection of inclined cosmic ray air showers. 
LOPES is co-located and triggered by the KASCADE 
(KArlsruhe Shower Core and Array DEtector) experiment, which also provides 
information on 
air shower properties such as electron and muon numbers on the ground, as 
well as the arrival direction.
Radio emission of nearly vertical cosmic ray air showers has been 
detected by LOPES.
        Results.LOPES-10 (the first phase of LOPES, consisting of 10 antennas) 
detected a significant number of cosmic ray air 
showers with a zenith angle larger than 50°, 
and many of these have very high radio field strengths.
The most inclined event that has been detected with LOPES-10 has
a zenith angle of almost 80°. 
This is proof that the new technique is also applicable for 
cosmic ray air showers with high inclinations, which in the case that 
they are initiated close to the ground, can be a signature of neutrino events.
        Conclusions.Our results indicate that arrays of simple radio antennas 
can be used 
for the detection of highly inclined air showers,
which might be triggered by neutrinos. In addition, 
we found that the radio pulse height (normalized with the muon
number) for highly inclined events 
increases with the geomagnetic 
angle, which confirms the geomagnetic origin of 
radio emission in cosmic ray air showers

EDP Sciences OAI-PMH repository (1.2.0)

Radio emission of highly inclined cosmic ray air showers measured with
  LOPES

Radio emission of highly inclined cosmic ray air showers measured with LOPES

Abstract

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The Australian National University

Radboud Repository

NARCIS

EDP Sciences OAI-PMH repository (1.2.0)