Impact of atmospheric effects on the energy reconstruction of air showers observed by the surface detectors of the Pierre Auger Observatory

Atmospheric conditions, such as the pressure (P), temperature (T) or air density ([rho] [is proportional to] P/T), affect the development of extended air showers initiated by energetic cosmic rays. We study the impact of the atmospheric variations on the reconstruction of air showers with data from...

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Veröffentlicht in:	Journal of instrumentation 2017-02, Vol.12 (2), p.P02006-P02006, Article P02006
Hauptverfasser:	Aab, A., Abreu, P., Aglietta, M., Samarai, I. Al, Albuquerque, I.F.M., Allekotte, I., Almela, A., Castillo, J. Alvarez, Alvarez-Muñiz, J., Anastasi, G.A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Arqueros, F., Arsene, N., Asorey, H., Assis, P., Aublin, J., Avila, G., Badescu, A.M., Balaceanu, A., Luz, R.J. Barreira, Baus, C., Beatty, J.J., Becker, K.H., Bellido, J.A., Berat, C., Bertaina, M.E., Bertou, X., Biermann, P.L., Billoir, P., Biteau, J., Blaess, S.G., Blanco, A., Blazek, J., Bleve, C., Boháčová, M., Boncioli, D., Bonifazi, C., Borodai, N., Botti, A.M., Brack, J., Brancus, I., Bretz, T., Bridgeman, A., Briechle, F.L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K.S., Caccianiga, L., Cancio, A., Canfora, F., Caramete, L., Caruso, R., Castellina, A., Cataldi, G., Cazon, L., Chavez, A.G., Chinellato, J.A., Chudoba, J., Clay, R.W., Colalillo, R., Coleman, A., Collica, L., Coluccia, M.R., Conceição, R., Contreras, F., Cooper, M.J., Coutu, S., Covault, C.E., Criss, A., Cronin, J., D'Amico, S., Daniel, B., Dasso, S., Daumiller, K., Dawson, B.R., de Almeida, R.M., de Jong, S.J., Mauro, G. De, Neto, J.R.T. de Mello, Mitri, I. De, de Oliveira, J., de Souza, V., Debatin, J., Deligny, O., Giulio, C. Di, Matteo, A. Di, Castro, M.L. Díaz, Diogo, F., Dobrigkeit, C., D'Olivo, J.C., Anjos, R.C. dos, Dova, M.T., Dundovic, A., Ebr, J., Engel, R.
Format:	Artikel
Sprache:	eng
Schlagworte:	Air showers ASTRONOMY AND ASTROPHYSICS Astrophysics Atmospheric effects Atmospherics Augers Cherenkov detectors data analysis Density High Energy Astrophysical Phenomena INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY large detector systems for particle and astroparticle physics Modulation Physics Reconstruction Surface detectors systematic effects
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Zusammenfassung:	Atmospheric conditions, such as the pressure (P), temperature (T) or air density ([rho] [is proportional to] P/T), affect the development of extended air showers initiated by energetic cosmic rays. We study the impact of the atmospheric variations on the reconstruction of air showers with data from the arrays of surface detectors of the Pierre Auger Observatory, considering separately the one with detector spacings of 1500 m and the one with 750 m spacing. We observe modulations in the event rates that are due to the influence of the air density and pressure variations on the measured signals, from which the energy estimators are obtained. We show how the energy assignment can be corrected to account for such atmospheric effects.
ISSN:	1748-0221 1748-0221
DOI:	10.1088/1748-0221/12/02/P02006