Modeling of the Near-Earth Low-Energy Antiproton Fluxes
The local interstellar antiproton spectrum is simulated taking into account antineutron decay, (He,p) interaction, secondary and tertiary antiproton production, and the solar modulation in the “force field” approximation. Inclusive invariant cross-sections were obtained through a Monte Carlo procedu...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | Advances in Astronomy |
| Online Access: | http://dx.doi.org/10.1155/2011/471094 |
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| author | U. B. Jayanthi A. A. Gusev |
| author_facet | U. B. Jayanthi A. A. Gusev |
| author_sort | U. B. Jayanthi |
| collection | DOAJ |
| description | The local interstellar antiproton spectrum is simulated taking into account antineutron decay, (He,p) interaction, secondary and tertiary antiproton production, and the solar modulation in the “force field” approximation. Inclusive invariant cross-sections were obtained through a Monte Carlo procedure using the Multistage Dynamical Model code simulating various processes of the particle production. The results of the simulations provided flux values of 4⋅10−3 to 10−2
and 10−2 to 1.7⋅10−2 antiprotons/(𝑚2 s sr GeV) at energies of 0.2 and 1 GeV, respectively, for the solar maximum and minimum epochs. Simulated flux of the trapped antiprotons in the inner magnetosphere due to galactic cosmic ray (GCR) interactions with the atmospheric constituents exceeds the galactic antiproton flux up to several orders. These simulation results considering the assumptions with the attendant limitations are in comprehensive agreement with the experimental data including the PAMELA ones. |
| format | Article |
| id | doaj-art-2daca7b4dfab48faa05c7a883c9014dd |
| institution | Kabale University |
| issn | 1687-7969 1687-7977 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Astronomy |
| spelling | doaj-art-2daca7b4dfab48faa05c7a883c9014dd2025-02-03T01:12:48ZengWileyAdvances in Astronomy1687-79691687-79772011-01-01201110.1155/2011/471094471094Modeling of the Near-Earth Low-Energy Antiproton FluxesU. B. Jayanthi0A. A. Gusev1Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais (DAS-INPE), 12227-010 São José dos Campos, SP, BrazilDepartment of Cosmogeophysics, Space Research Institute, Russian Academy of Sciences (IKI RAS), Moscow 117997, RussiaThe local interstellar antiproton spectrum is simulated taking into account antineutron decay, (He,p) interaction, secondary and tertiary antiproton production, and the solar modulation in the “force field” approximation. Inclusive invariant cross-sections were obtained through a Monte Carlo procedure using the Multistage Dynamical Model code simulating various processes of the particle production. The results of the simulations provided flux values of 4⋅10−3 to 10−2 and 10−2 to 1.7⋅10−2 antiprotons/(𝑚2 s sr GeV) at energies of 0.2 and 1 GeV, respectively, for the solar maximum and minimum epochs. Simulated flux of the trapped antiprotons in the inner magnetosphere due to galactic cosmic ray (GCR) interactions with the atmospheric constituents exceeds the galactic antiproton flux up to several orders. These simulation results considering the assumptions with the attendant limitations are in comprehensive agreement with the experimental data including the PAMELA ones.http://dx.doi.org/10.1155/2011/471094 |
| spellingShingle | U. B. Jayanthi A. A. Gusev Modeling of the Near-Earth Low-Energy Antiproton Fluxes Advances in Astronomy |
| title | Modeling of the Near-Earth Low-Energy Antiproton Fluxes |
| title_full | Modeling of the Near-Earth Low-Energy Antiproton Fluxes |
| title_fullStr | Modeling of the Near-Earth Low-Energy Antiproton Fluxes |
| title_full_unstemmed | Modeling of the Near-Earth Low-Energy Antiproton Fluxes |
| title_short | Modeling of the Near-Earth Low-Energy Antiproton Fluxes |
| title_sort | modeling of the near earth low energy antiproton fluxes |
| url | http://dx.doi.org/10.1155/2011/471094 |
| work_keys_str_mv | AT ubjayanthi modelingofthenearearthlowenergyantiprotonfluxes AT aagusev modelingofthenearearthlowenergyantiprotonfluxes |