| Texto completo | |
| Autor(es): Mostrar menos - |
Carvalho, W. R., Jr.
;
Romero-Wolf, A.
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Belov, K.
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D'Addario, L.
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Anderson, M.
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Eastwood, M.
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Hallinan, G.
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Kocz, J.
;
Lamb, J.
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Monroe, R.
;
Nelles, A.
;
Plant, K.
Número total de Autores: 12
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| Tipo de documento: | Artigo Científico |
| Fonte: | 36TH INTERNATIONAL COSMIC RAY CONFERENCE, ICRC2019; v. N/A, p. 8-pg., 2021-01-01. |
| Resumo | |
In this study we investigate the capability of the planned expansion of the Owens Valley Long Wavelength Array (OVRO-LWA) to perform radio based composition studies of the cosmic-ray flux between 50 PeV and 1 EeV. We use ZHAIRES simulations in conjunction with a method similar to the one developed by the LOFAR experiment, but that only uses radio data between 30 and 80 MHz, to reconstruct the depth of shower maximum X-max. We found that the lower antenna densities away from the central core of the array lead to a decrease in the effective area for quality X-max reconstructions of low zenith angle events, and that the asymmetry of the array layout creates the need for quality cuts that depend on arrival direction. We also investigate the dependence of X-max uncertainties on shower energy and arrival direction and show that at 500 PeV it is possible to obtain X-max uncertainties lower than 20 g/cm(2) for the majority of arrival directions by using a set of simple cuts. For energies below 10(17) eV, alternative reconstruction methods, such as the use of hierarchical beamforming to increase SNR or the use of arrival time measurements on the ground may be needed to maintain X-max resolution at a desirable level. (AU) | |
| Processo FAPESP: | 18/18876-3 - Otimização do array de rádio OVRO-LWA para a detecção de raios cósmicos |
| Beneficiário: | Washington Rodrigues de Carvalho Junior |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado |
| Processo FAPESP: | 15/15735-1 - Investigação da composição dos raios cósmicos de ultra alta energia utilizando a técnica de detecção por rádio |
| Beneficiário: | Washington Rodrigues de Carvalho Junior |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |