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Communication Dans Un Congrès Année : 2021

EUSO-TA ground based fluorescence detector: analysis of the detected events

F. Bisconti
  • Fonction : Auteur
J.W. Belz
  • Fonction : Auteur
M.E. Bertaina
  • Fonction : Auteur
F. Capel
  • Fonction : Auteur
M. Casolino
  • Fonction : Auteur
T. Ebisuzaki
  • Fonction : Auteur
J. Eser
  • Fonction : Auteur
J.N. Matthews
  • Fonction : Auteur
L.W. Piotrowski
  • Fonction : Auteur
Z. Plebaniak
  • Fonction : Auteur
M. Putis
  • Fonction : Auteur
H. Sagawa
  • Fonction : Auteur
N. Sakaki
  • Fonction : Auteur
H. Shin
  • Fonction : Auteur
K. Shinozaki
  • Fonction : Auteur
P. Sokolsky
  • Fonction : Auteur
Y. Takizawa
  • Fonction : Auteur
Y. Tameda
  • Fonction : Auteur
G.B. Thomson
  • Fonction : Auteur

Résumé

EUSO-TA is a ground-based florescence detector built to validate the design of an ultra-high energy cosmic ray fluorescence detector to be operated in space. EUSO-TA detected the first air shower events with the technology developed within the JEM-EUSO program. It operates at the Telescope Array (TA) site in Utah, USA. With the external trigger provided by the Black Rock Mesa fluorescence detectors of Telescope Array (TA-FDs), EUSO-TA observed nine ultra-high energy cosmic ray events and several laser events from the Central Laser Facility of Telescope Array and portable lasers like the JEM-EUSO Global Light System prototype. The reconstruction parameters of the cosmic ray events which crossed the EUSO-TA field of view (both detected and not detected by EUSO-TA), were provided by the Telescope Array Collaboration. As the TA-FDs have a wider field of view than EUSO-TA (~30 times larger), they allow the cosmic ray energy reconstruction based on the observation of most of the extensive air-shower profiles, including the shower maximum, while EUSO-TA only observes a portion of the showers, usually far from the maximum. For this reason, the energy of the cosmic rays corresponding to the EUSO-TA signals appear lower than the actual ones. In this contribution, the analysis of the cosmic-ray events detected with EUSO-TA is discussed.

Dates et versions

hal-02327726 , version 1 (22-10-2019)

Identifiants

Citer

F. Bisconti, J.W. Belz, M.E. Bertaina, S. Blin-Bondil, F. Capel, et al.. EUSO-TA ground based fluorescence detector: analysis of the detected events. 36th International Cosmic Ray Conference, Jul 2019, Madison, United States. pp.197, ⟨10.22323/1.358.0197⟩. ⟨hal-02327726⟩
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