Event rates of UHE photons cascading in the geomagnetic field
at CTA-North

D 2022

Event rates of UHE photons cascading in the geomagnetic field at CTA-North

CHEMINANT, Kevin Almeida; Dariusz GÓRA; David E. Alvarez CASTILLO; Nikolay BUDNEV; Alok C. GUPTA et. al.

Basic information

Original name

Event rates of UHE photons cascading in the geomagnetic field at CTA-North

Authors

Edition

Itálie, Proceedings of Science, p. "726-1"-"726-9", 9 pp. 2022

Publisher

Sissa Medialab Srl

Other information

Language

English

Type of outcome

Proceedings paper

Field of Study

10308 Astronomy

Country of publisher

Italy

Confidentiality degree

is not subject to a state or trade secret

Publication form

electronic version available online

References:

URL

RIV identification code

RIV/47813059:19630/22:A0000247

Organization unit

Institute of physics in Opava

ISSN

DOI

https://doi.org/10.22323/1.395.0726

EID Scopus

2-s2.0-85144113043

Keywords in English

Cosmic rays; Cosmology; Earth atmosphere; Gamma rays; Geomagnetism; Intelligent systems; Monte Carlo methods; Multivariant analysis;Cosmic Ray Background; Electro-magnetic showers; Electron-positron pairs; Photons

Abstract

In the original language

Photons in the EeV range and beyond are expected from top-down models of UHECR production and from the GZK effect. As they reach the Earth, they have a non-zero probability of converting into an electron/positron pair in the geomagnetic field and of producing an electromagnetic shower above the atmosphere. In this work, we present a new method to search for cascading UHE photons with gamma-ray telescopes based on Monte-Carlo simulations and multivariate analyses. Considering the future CTA-North experiment in La Palma, Spain, we show that such a method provides an efficient cosmic-ray background rejection with little loss of cascading UHE photon events. We also estimate that if gamma-ray bursts photon emission extends to the EeV regime, the number of expected events in 30 hours of observation time can go up to 0.17.

Cite

CHEMINANT, Kevin Almeida; Dariusz GÓRA; David E. Alvarez CASTILLO; Nikolay BUDNEV; Alok C. GUPTA; Piotr HOMOLA; Bartosz ŁOZOWSKI; Mikhail V. MEDVEDEV; Alona MOZGOVA; Maciej PAWLIK; Krzysztof RZECKI; Karel SMOLEK; Jaroslaw STASIELAK; Oleksandr SUSHCHOV; Arman TURSUNOV; Tadeusz WIBIG and Jilberto ZAMORA-SAA. Event rates of UHE photons cascading in the geomagnetic field at CTA-North. Online. In Proceedings of Science. Itálie: Sissa Medialab Srl, 2022, p. "726-1"-"726-9", 9 pp. ISSN 1824-8039. Available from: https://doi.org/10.22323/1.395.0726.

@inproceedings{66686,
   author = {Cheminant, Kevin Almeida and Góra, Dariusz and Castillo, David E. Alvarez and Budnev, Nikolay and Gupta, Alok C. and Homola, Piotr and Łozowski, Bartosz and Medvedev, Mikhail V. and Mozgova, Alona and Pawlik, Maciej and Rzecki, Krzysztof and Smolek, Karel and Stasielak, Jaroslaw and Sushchov, Oleksandr and Tursunov, Arman and Wibig, Tadeusz and ZamoraandSaa, Jilberto},
   address = {Itálie},
   booktitle = {Proceedings of Science},
   doi = {https://doi.org/10.22323/1.395.0726},
   keywords = {Cosmic rays; Cosmology; Earth atmosphere; Gamma rays; Geomagnetism; Intelligent systems; Monte Carlo methods; Multivariant analysis;Cosmic Ray Background; Electro-magnetic showers; Electron-positron pairs; Photons},
   howpublished = {elektronická verze "online"},
   language = {eng},
   location = {Itálie},
   pages = {"726-1"-"726-9"},
   publisher = {Sissa Medialab Srl},
   title = {Event rates of UHE photons cascading in the geomagnetic field at CTA-North},
   url = {https://pos.sissa.it/395/726},
   year = {2022}
}

TY  - CONF
ID  - 66686
AU  - Cheminant, Kevin Almeida - Góra, Dariusz - Castillo, David E. Alvarez - Budnev, Nikolay - Gupta, Alok C. - Homola, Piotr - Łozowski, Bartosz - Medvedev, Mikhail V. - Mozgova, Alona - Pawlik, Maciej - Rzecki, Krzysztof - Smolek, Karel - Stasielak, Jaroslaw - Sushchov, Oleksandr - Tursunov, Arman - Wibig, Tadeusz - Zamora-Saa, Jilberto
PY  - 2022
TI  - Event rates of UHE photons cascading in the geomagnetic field at CTA-North
PB  - Sissa Medialab Srl
CY  - Itálie
KW  - Cosmic rays
KW  - Cosmology
KW  - Earth atmosphere
KW  - Gamma rays
KW  - Geomagnetism
KW  - Intelligent systems
KW  - Monte Carlo methods
KW  - Multivariant analysis;Cosmic Ray Background
KW  - Electro-magnetic showers
KW  - Electron-positron pairs
KW  - Photons
UR  - https://pos.sissa.it/395/726
N2  - Photons in the EeV range and beyond are expected from top-down models of UHECR production and from the GZK effect. As they reach the Earth, they have a non-zero probability of converting into an electron/positron pair in the geomagnetic field and of producing an electromagnetic shower above the atmosphere. In this work, we present a new method to search for cascading UHE photons with gamma-ray telescopes based on Monte-Carlo simulations and multivariate analyses. Considering the future CTA-North experiment in La Palma, Spain, we show that such a method provides an efficient cosmic-ray background rejection with little loss of cascading UHE photon events. We also estimate that if gamma-ray bursts photon emission extends to the EeV regime, the number of expected events in 30 hours of observation time can go up to 0.17.
ER  -

CHEMINANT, Kevin Almeida; Dariusz GÓRA; David E. Alvarez CASTILLO; Nikolay BUDNEV; Alok C. GUPTA; Piotr HOMOLA; Bartosz ŁOZOWSKI; Mikhail V. MEDVEDEV; Alona MOZGOVA; Maciej PAWLIK; Krzysztof RZECKI; Karel SMOLEK; Jaroslaw STASIELAK; Oleksandr SUSHCHOV; Arman TURSUNOV; Tadeusz WIBIG and Jilberto ZAMORA-SAA. Event rates of UHE photons cascading in the geomagnetic field at CTA-North. Online. In \textit{Proceedings of Science}. Itálie: Sissa Medialab Srl, 2022, p.~''726-1''-''726-9'', 9 pp. ISSN~1824-8039. Available from: https://doi.org/10.22323/1.395.0726.

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