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Title:Azimuthal asymmetry in the risetime of the Surface Detector signals of the Pierre Auger Observatory
Authors:ID Minaya, Ignacio (Author)
ID Filipčič, Andrej (Author)
ID Kukec Mezek, Gašper (Author)
ID Saleh, Ahmed (Author)
ID Stanič, Samo (Author)
ID Trini, Marta (Author)
ID Veberič, Darko (Author)
ID Vorobiov, Serguei (Author)
ID Yang, Lili (Author)
ID Zavrtanik, Danilo (Author)
ID Zavrtanik, Marko (Author), et al.
Files:.pdf ICRC2015_405.pdf (243,04 KB)
MD5: 061D4079F2C2B0599DBA36D9D6C3ED7C
 
Language:English
Work type:Not categorized
Typology:1.08 - Published Scientific Conference Contribution
Organization:UNG - University of Nova Gorica
Abstract:The azimuthal asymmetry in the risetime of signals in Auger surface detector stations is a source of information on shower development. The azimuthal asymmetry is due to a combination of the longitudinal evolution of the shower and geometrical effects related to the angles of incidence of the particles into the detectors. The magnitude of the effect depends upon the zenith angle and state of development of the shower and thus provides a novel observable sensitive to the mass composition of cosmic rays above 3 × 10[sup]18 eV. By comparing measurements with predictions from shower simulations, we find for both of our adopted models of hadronic physics (QGSJetII- 04 and Epos-LHC) an indication that the mean cosmic-ray mass increases with energy, as has been inferred from other studies. However the absolute values derived for the mass are dependent on the shower model and on the range of distance from the shower core selected. Thus the method has uncovered further deficiencies in our understanding of shower modelling that must be resolved before the mass composition can be inferred from (sec θ)max.
Keywords:Pierre Auger Observatory, Surface Detector, risetime of detector signal, azimuthal asymmetry, extensive air showers
Publication status:Published
Year of publishing:2015
PID:20.500.12556/RUNG-2139 New window
COBISS.SI-ID:4152059 New window
NUK URN:URN:SI:UNG:REP:HPN0CWEH
Publication date in RUNG:03.03.2016
Views:5906
Downloads:199
Metadata:XML DC-XML DC-RDF
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MINAYA, Ignacio, FILIPČIČ, Andrej, KUKEC MEZEK, Gašper, SALEH, Ahmed, STANIČ, Samo, TRINI, Marta, VEBERIČ, Darko, VOROBIOV, Serguei, YANG, Lili, ZAVRTANIK, Danilo and ZAVRTANIK, Marko, 2015, Azimuthal asymmetry in the risetime of the Surface Detector signals of the Pierre Auger Observatory. In : The 34th International Cosmic Ray Conference [online]. Published Scientific Conference Contribution. 2015. [Accessed 7 April 2025]. Retrieved from: https://repozitorij.ung.si/IzpisGradiva.php?lang=eng&id=2139
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Record is a part of a monograph

Title:The 34th International Cosmic Ray Conference : ICRC 2015 (The Hague, Netherlands)
Publisher:PoS, http://pos.sissa.it/
Year of publishing:2015
Conference organizer:International Union of Pure and Applied Physics (IUPAP)
Collection title:Proceedings of ICRC 2015

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License:CC BY-NC-SA 4.0, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
Link:http://creativecommons.org/licenses/by-nc-sa/4.0/
Description:A Creative Commons license that bans commercial use and requires the user to release any modified works under this license.
Licensing start date:02.03.2016

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