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Simulation study of the relative Askaryan fraction at the south pole

Paudel, Ek Narayan; Coleman, Alan; Schroeder, Frank G. 1
1 Institut für Astroteilchenphysik (IAP), Karlsruher Institut für Technologie (KIT)

Abstract:

We use coreas simulations to study the ratio of geomagnetic and Askaryan radio emission from cosmic-ray air showers at the location of the south pole. The fraction of Askaryan emission relative to the total emission is determined by the polarization of the radio signal at the time of its peak amplitude. We find that the relative Askaryan fraction has a radial dependence increasing with the distance from the shower axis—with a plateau around the Cherenkov ring. We further find that the Askaryan fraction depends on shower parameters like the zenith angle and the distance to the shower maximum. While these dependencies are in agreement with earlier studies, they have not yet been utilized to determine the depth of the shower maximum, X$_{max}$, based on the Askaryan fraction. Fitting these dependencies with a polynomial model, we arrive at an alternative method to reconstruct X$_{max}$ using a measurement of the Askaryan fraction and shower geometry as input. Depending on the measurement uncertainties of the Askaryan fraction, this method provides a measurement of X$_{max}$ with a resolution similar to other methods of reconstructing X$_{max}$ from radio observables. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000148547
Veröffentlicht am 13.07.2022
Originalveröffentlichung
DOI: 10.1103/PhysRevD.105.103006
Scopus
Zitationen: 5
Web of Science
Zitationen: 2
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 05.2022
Sprache Englisch
Identifikator ISSN: 2470-0010, 2470-0029
KITopen-ID: 1000148547
HGF-Programm 51.13.04 (POF IV, LK 01) Kosmische Strahlung Technologien
Erschienen in Physical Review D
Verlag American Physical Society (APS)
Band 105
Heft 10
Seiten Art.Nr. 103006
Vorab online veröffentlicht am 05.05.2022
Nachgewiesen in Scopus
Web of Science
Dimensions
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