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Ros, G.; Medina-Tanco, G.A.; Supanitsky, A.D.; Del Peral, L.; Rodríguez-Frías, M.D. "Energy reconstruction of hadron-initiated showers of ultra-high energy cosmic rays" (2015) Astroparticle Physics. 69:61-67
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Abstract:

The current methods to determine the primary energy of ultra-high energy cosmic rays (UHECRs) are different when dealing with hadron or photon primaries. The current experiments combine two different techniques, an array of surface detectors and fluorescence telescopes. The latter allow an almost calorimetric measurement of the primary energy. Thus, hadron-initiated showers detected by both type of detectors are used to calibrate the energy estimator from the surface array (usually the interpolated signal at a certain distance from the shower core S(r0)) with the primary energy. On the other hand, this calibration is not feasible when searching for photon primaries since no high energy photon has been unambiguously detected so far. Therefore, pure Monte Carlo parametrizations are used instead. In this work, we present a new method to determine the primary energy of hadron-induced showers in a hybrid experiment based on a technique previously developed for photon primaries. It consists on a set of calibration curves that relate the surface energy estimator, S(r0), and the depth of maximum development of the shower, Xmax, obtained from the fluorescence telescopes. Then, the primary energy can be determined from pure surface information since S(r0) and the zenith angle of the incoming shower are only needed. Considering a mixed sample of ultra-high energy proton and iron primaries and taking into account the reconstruction uncertainties and shower to shower fluctuations, we demonstrate that the primary energy may be determined with a systematic uncertainty below 1% and resolution around 16% in the energy range from 1018.5 to 1019.6 eV. Several array geometries, the shape of the energy error distributions and the uncertainties due to the unknown composition of the primary flux have been analyzed as well. © 2015 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Energy reconstruction of hadron-initiated showers of ultra-high energy cosmic rays
Autor:Ros, G.; Medina-Tanco, G.A.; Supanitsky, A.D.; Del Peral, L.; Rodríguez-Frías, M.D.
Filiación:Space and Astroparticle Group, Dpto. Física y Matemáticas, Universidad de Alcalá, Ctra. Madrid-Barcelona km. 33, Alcalá de Henares, E-28871, Spain
Instituto de Ciencias Nucleares, UNAM, Ciudad Universitaria, Circuito Exteriror S/N, Mexico D.F, 04510, Mexico
Instituto de Astronomía y Física Del Espacio, IAFE, CONICET-UBA, Argentina
ITeDA (CNEA CONICET - UNSAM), Buenos Aires, Argentina
Palabras clave:Energy reconstruction; Hybrid experiments; Ultra-high energy cosmic rays; Calibration; Cosmology; Elementary particles; Fluorescence; Hadrons; Photons; Telescopes; Uncertainty analysis; Calorimetric measurements; Energy reconstruction; Fluorescence telescopes; Hybrid experiments; Surface information; Systematic uncertainties; Ultra high-energy cosmic rays; Ultra-high energies; Cosmic rays
Año:2015
Volumen:69
Página de inicio:61
Página de fin:67
DOI: http://dx.doi.org/10.1016/j.astropartphys.2015.04.001
Título revista:Astroparticle Physics
Título revista abreviado:Astropart. Phys.
ISSN:09276505
CODEN:APHYE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09276505_v69_n_p61_Ros

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Citas:

---------- APA ----------
Ros, G., Medina-Tanco, G.A., Supanitsky, A.D., Del Peral, L. & Rodríguez-Frías, M.D. (2015) . Energy reconstruction of hadron-initiated showers of ultra-high energy cosmic rays. Astroparticle Physics, 69, 61-67.
http://dx.doi.org/10.1016/j.astropartphys.2015.04.001
---------- CHICAGO ----------
Ros, G., Medina-Tanco, G.A., Supanitsky, A.D., Del Peral, L., Rodríguez-Frías, M.D. "Energy reconstruction of hadron-initiated showers of ultra-high energy cosmic rays" . Astroparticle Physics 69 (2015) : 61-67.
http://dx.doi.org/10.1016/j.astropartphys.2015.04.001
---------- MLA ----------
Ros, G., Medina-Tanco, G.A., Supanitsky, A.D., Del Peral, L., Rodríguez-Frías, M.D. "Energy reconstruction of hadron-initiated showers of ultra-high energy cosmic rays" . Astroparticle Physics, vol. 69, 2015, pp. 61-67.
http://dx.doi.org/10.1016/j.astropartphys.2015.04.001
---------- VANCOUVER ----------
Ros, G., Medina-Tanco, G.A., Supanitsky, A.D., Del Peral, L., Rodríguez-Frías, M.D. Energy reconstruction of hadron-initiated showers of ultra-high energy cosmic rays. Astropart. Phys. 2015;69:61-67.
http://dx.doi.org/10.1016/j.astropartphys.2015.04.001