Warning Time Analysis From SEP Simulations of a Two‐Tier REleASE System Applied to Mars Exploration
Abstract The sudden exposure to energetic protons from solar energetic particle (SEP) events beyond the Earth's magnetosphere and en route to and from Mars can, in extreme cases, lead to acute radiation sickness, an impairing, mission‐endangering condition for astronauts. Timely warnings of the...
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Wiley
2020-04-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2019SW002354 |
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| _version_ | 1841536359364296704 |
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| author | A. Posner R.D. Strauss |
| author_facet | A. Posner R.D. Strauss |
| author_sort | A. Posner |
| collection | DOAJ |
| description | Abstract The sudden exposure to energetic protons from solar energetic particle (SEP) events beyond the Earth's magnetosphere and en route to and from Mars can, in extreme cases, lead to acute radiation sickness, an impairing, mission‐endangering condition for astronauts. Timely warnings of their impending occurrence may significantly reduce radiation exposure by allowing astronauts sufficient time to move to a radiation shelter. The Relativistic Electron Alert System for Exploration (REleASE) has been developed to provide such early warnings for the Earth‐Moon system by exploiting the time difference of the arrival of SEP electrons and ions at 1 AU. This study explores the effectiveness of REleASE in a scenario that assumes a two‐element system, one placed at Earth‐Sun L1 and the other at Mars‐Sun L1. This system would exploit the Hohmann‐Parker effect, the circumstance that a spacecraft remains close to the heliospheric magnetic field lines that connect Earth and/or Mars with the Sun while in the Hohmann transfer orbit. We investigate whether the two‐element REleASE system would provide advance warnings for all phases of a mission to and from Mars. In the absence of adequate long‐term SEP measurements beyond Earth orbit, we employ 2‐D modeling of SEP injection and transport for SEP exposure scenarios, in which the best magnetic connections and thus most rapid flux increases of protons occur at exploration vehicle. We show the relative timing of alert occurrence and arrival of harmful ions at the spacecraft throughout a round‐trip human mission to Mars. |
| format | Article |
| id | doaj-art-c7913a17a25a41b4acde2eea141e7b12 |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2020-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-c7913a17a25a41b4acde2eea141e7b122025-01-14T16:35:34ZengWileySpace Weather1542-73902020-04-01184n/an/a10.1029/2019SW002354Warning Time Analysis From SEP Simulations of a Two‐Tier REleASE System Applied to Mars ExplorationA. Posner0R.D. Strauss1SMD/Heliophysics Division NASA HQ Washington DC USACenter for Space Research North‐West University Potchefstroom South AfricaAbstract The sudden exposure to energetic protons from solar energetic particle (SEP) events beyond the Earth's magnetosphere and en route to and from Mars can, in extreme cases, lead to acute radiation sickness, an impairing, mission‐endangering condition for astronauts. Timely warnings of their impending occurrence may significantly reduce radiation exposure by allowing astronauts sufficient time to move to a radiation shelter. The Relativistic Electron Alert System for Exploration (REleASE) has been developed to provide such early warnings for the Earth‐Moon system by exploiting the time difference of the arrival of SEP electrons and ions at 1 AU. This study explores the effectiveness of REleASE in a scenario that assumes a two‐element system, one placed at Earth‐Sun L1 and the other at Mars‐Sun L1. This system would exploit the Hohmann‐Parker effect, the circumstance that a spacecraft remains close to the heliospheric magnetic field lines that connect Earth and/or Mars with the Sun while in the Hohmann transfer orbit. We investigate whether the two‐element REleASE system would provide advance warnings for all phases of a mission to and from Mars. In the absence of adequate long‐term SEP measurements beyond Earth orbit, we employ 2‐D modeling of SEP injection and transport for SEP exposure scenarios, in which the best magnetic connections and thus most rapid flux increases of protons occur at exploration vehicle. We show the relative timing of alert occurrence and arrival of harmful ions at the spacecraft throughout a round‐trip human mission to Mars.https://doi.org/10.1029/2019SW002354explorationsolar proton eventsforecastingparticle instrumentation |
| spellingShingle | A. Posner R.D. Strauss Warning Time Analysis From SEP Simulations of a Two‐Tier REleASE System Applied to Mars Exploration Space Weather exploration solar proton events forecasting particle instrumentation |
| title | Warning Time Analysis From SEP Simulations of a Two‐Tier REleASE System Applied to Mars Exploration |
| title_full | Warning Time Analysis From SEP Simulations of a Two‐Tier REleASE System Applied to Mars Exploration |
| title_fullStr | Warning Time Analysis From SEP Simulations of a Two‐Tier REleASE System Applied to Mars Exploration |
| title_full_unstemmed | Warning Time Analysis From SEP Simulations of a Two‐Tier REleASE System Applied to Mars Exploration |
| title_short | Warning Time Analysis From SEP Simulations of a Two‐Tier REleASE System Applied to Mars Exploration |
| title_sort | warning time analysis from sep simulations of a two tier release system applied to mars exploration |
| topic | exploration solar proton events forecasting particle instrumentation |
| url | https://doi.org/10.1029/2019SW002354 |
| work_keys_str_mv | AT aposner warningtimeanalysisfromsepsimulationsofatwotierreleasesystemappliedtomarsexploration AT rdstrauss warningtimeanalysisfromsepsimulationsofatwotierreleasesystemappliedtomarsexploration |