Simulation study of the relative Askaryan fraction at the south pole
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 amplit...
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ftubkarlsruhe:oai:EVASTAR-Karlsruhe.de:1000148547 2023-06-11T04:16:45+02:00 Simulation study of the relative Askaryan fraction at the south pole Paudel, Ek Narayan Coleman, Alan Schroeder, Frank G. 2022-07-13 application/pdf https://publikationen.bibliothek.kit.edu/1000148547 https://publikationen.bibliothek.kit.edu/1000148547/149013843 https://doi.org/10.5445/IR/1000148547 eng eng American Physical Society info:eu-repo/semantics/altIdentifier/wos/000807698300008 info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.105.103006 info:eu-repo/semantics/altIdentifier/issn/2470-0010 info:eu-repo/semantics/altIdentifier/issn/2470-0029 https://publikationen.bibliothek.kit.edu/1000148547 https://publikationen.bibliothek.kit.edu/1000148547/149013843 https://doi.org/10.5445/IR/1000148547 https://creativecommons.org/licenses/by/4.0/deed.de info:eu-repo/semantics/openAccess Physical Review D, 105 (10), Art.Nr. 103006 ISSN: 2470-0010, 2470-0029 ddc:530 Physics info:eu-repo/classification/ddc/530 doc-type:article Text info:eu-repo/semantics/article article info:eu-repo/semantics/publishedVersion 2022 ftubkarlsruhe https://doi.org/10.5445/IR/100014854710.1103/PhysRevD.105.103006 2023-04-23T22:12:14Z 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. Although existing template methods give superior resolution, they are more computationally intensive. Consequently, the use of polarization to extract the Askaryan fraction of the radio signal should be considered as an additional input observable in future generations of template-fitting reconstruction and other multivariate approaches for measuring X$_{max}$. Article in Journal/Newspaper South pole KITopen (Karlsruhe Institute of Technologie) South Pole |
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Open Polar |
collection |
KITopen (Karlsruhe Institute of Technologie) |
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ftubkarlsruhe |
language |
English |
topic |
ddc:530 Physics info:eu-repo/classification/ddc/530 |
spellingShingle |
ddc:530 Physics info:eu-repo/classification/ddc/530 Paudel, Ek Narayan Coleman, Alan Schroeder, Frank G. Simulation study of the relative Askaryan fraction at the south pole |
topic_facet |
ddc:530 Physics info:eu-repo/classification/ddc/530 |
description |
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. Although existing template methods give superior resolution, they are more computationally intensive. Consequently, the use of polarization to extract the Askaryan fraction of the radio signal should be considered as an additional input observable in future generations of template-fitting reconstruction and other multivariate approaches for measuring X$_{max}$. |
format |
Article in Journal/Newspaper |
author |
Paudel, Ek Narayan Coleman, Alan Schroeder, Frank G. |
author_facet |
Paudel, Ek Narayan Coleman, Alan Schroeder, Frank G. |
author_sort |
Paudel, Ek Narayan |
title |
Simulation study of the relative Askaryan fraction at the south pole |
title_short |
Simulation study of the relative Askaryan fraction at the south pole |
title_full |
Simulation study of the relative Askaryan fraction at the south pole |
title_fullStr |
Simulation study of the relative Askaryan fraction at the south pole |
title_full_unstemmed |
Simulation study of the relative Askaryan fraction at the south pole |
title_sort |
simulation study of the relative askaryan fraction at the south pole |
publisher |
American Physical Society |
publishDate |
2022 |
url |
https://publikationen.bibliothek.kit.edu/1000148547 https://publikationen.bibliothek.kit.edu/1000148547/149013843 https://doi.org/10.5445/IR/1000148547 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Physical Review D, 105 (10), Art.Nr. 103006 ISSN: 2470-0010, 2470-0029 |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000807698300008 info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.105.103006 info:eu-repo/semantics/altIdentifier/issn/2470-0010 info:eu-repo/semantics/altIdentifier/issn/2470-0029 https://publikationen.bibliothek.kit.edu/1000148547 https://publikationen.bibliothek.kit.edu/1000148547/149013843 https://doi.org/10.5445/IR/1000148547 |
op_rights |
https://creativecommons.org/licenses/by/4.0/deed.de info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5445/IR/100014854710.1103/PhysRevD.105.103006 |
_version_ |
1768375310578876416 |