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2024-11-22 1:41

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Conference: Bucharest University Faculty of Physics 2021 Meeting

Section: Nuclear and Elementary Particles Physics

Title:

The response of a model hexagonal detector area to radio signals from ultra-high energy cosmic rays air showers

Authors:

Paula Gina ISAR (1), Dragoș HÎRNEA (1)

Affiliation:

1) Institute of Space Science (ISS), Bucharest-Măgurele, Romania

E-mail

gina.isar@spacescience.ro, dragos.hirnea@spacescience.ro

Keywords:

cosmic rays, air showers, radio detection, Monte Carlo simulations

Abstract:

Ultra-high energy cosmic rays (UHECRs) are subatomic charged particles accelerated at astounding energies in violent astrophysical processes. They travel vast distances through the outer space and every so often enter the Earth’s atmosphere. Here they interact and initialize the development of cascading secondary elementary particles, known as extensive air showers (EASs). From characteristics of the induced air showers, properties of primary cosmic rays are deduced, such as mass, energy and arrival direction, and so they serve in complementary indirect measurements of UHECRs. The radio detection technique is used to record radio signals emitted by the electromagnetic component of air showers, employing arrays of radio antennas. In this paper we look at the response of a model hexagonal layout of 37 antennas, by using a sample of CoREAS simulated proton events at two different energies: 10^18 and 10^19 eV. First we look at the general characteristics of the registered polarized radio signals, in correlation with the position of the observer, with respect to the shower core and distance to the showers axis. In a second step we explore some particular characteristics of the radio emission. This analysis, among others, is implemented into an YAD (yet another dialog) tool for creating graphical dialogs from shell scripts based on the user interface GTK+ and programming languages like Unix Shell and C. This tool is aimed for new users, with application on educational purposes, for an easy and friendly introduction to the physics of the present studies.

References:

1. Frank G. Schroeder, “Radio detection of cosmic-ray air showers and high-energy neutrinos“, Progress in Particle and Nucl. Phys., 93 (1-68) 2017

2. Aab, A. ... Isar P.G. et al. Pierre Auger Coll., “Observation of inclined EeV air showers with the radio detector of the Pierre Auger Observatory”, JCAP 10 (2018) 026

3.Aab,A....IsarP.G.etal.PierreAugerColl.,“EnergyestimationofcosmicrayswiththeEngineer- ing Radio Array of the Pierre Auger Observatory”, Phys. Rev. D 93 (122005) 2016

4. Huege,T.,“CoREAS1.4User’sManual”,2019: https://web.ikp.kit.edu/huege/downloads/coreas-manual.pdf

5. Heck, D., Knapp, J., Capdevielle, J. N., Schatz, G., and Thouw, T., “CORSIKA: a Monte Carlo code to simulate extensive air showers”, 1998.

6. Huege,T.,“REAS3.1User’sManual”,2011: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.574.3995 &rep=rep1&type=pdf

7. Abreu, P. et al. Pierre Auger Coll., “Antennas for the detection of radio emission pulses from cosmic-ray induced air showers at the Pierre Auger Observatory“, Journal of Instrumentation, 7(10):P10011–P10011, 2012

8.Isar,P.G.,Apel,W.D.,Arteaga,J.C.,etal.theLOPESColl.,“Radioemissionofenergeticcosmi- cray air showers: Polarization measurements with LOPES“, NIMA 604 (2009) S81

9. Isar, P. G., Hirnea, D., and Jipa, A., “Cosmic rays air showers properties and characteristics of the emitted radio signals using analytical approaches and full Monte Carlo simulations“, Rom. Rep. Phys., 72(1):301, 2020

10. Huege,T.forPierreAugerColl.,“Probingtheradioemissionfromcosmic-ray-inducedairshow- ers by polarization measurements“, ICRC 2013

11. The YAD website:https://sourceforge.net/projects/yad-dialog/ 12. A short presentation of the YAD developed tool is available at the following website: https://www.spacescience.ro/collaborations/auger/

13. ROOT (analyzing petabytes of data, scientifically), an open-source data analysis framework used by high energy physics and others. https://root.cern/

Acknowledgement:

This work was supported by a grant of the Romanian National Authority for Scientific Research and Innovation, CNCS/CCCDI - UEFISCDI, project number PN-III-P1-1.2- PCCDI-2018-0839, within PNCDI III, as well as by PN19150201/16N/2019.