Back to Search
Start Over
Interplanetary particle transport simulation for warning system for aviation exposure to solar energetic particles
- Source :
- Earth, Planets and Space. 67(1)
- Publisher :
- Springer Nature
-
Abstract
- Solar energetic particles (SEPs) are one of the extreme space weather phenomena. A huge SEP event increases the radiation dose received by aircrews, who should be warned of such events as early as possible. We developed a warning system for aviation exposure to SEPs. This article describes one component of the system, which calculates the temporal evolution of the SEP intensity and the spectrum immediately outside the terrestrial magnetosphere. To achieve this, we performed numerical simulations of SEP transport in interplanetary space, in which interplanetary SEP transport is described by the focused transport equation. We developed a new simulation code to solve the equation using a set of stochastic differential equations. In the code, the focused transport equation is expressed in a magnetic field line coordinate system, which is a non-orthogonal curvilinear coordinate system. An inverse Gaussian distribution is employed as the injection profile of SEPs at an inner boundary located near the Sun. We applied the simulation to observed SEP events as a validation test. The results show that our simulation can closely reproduce observational data for the temporal evolution of particle intensity. By employing the code, we developed the WArning System for AVIation Exposure to Solar energetic particles (WASAVIES).<br />23 pages, 11 figures, accepted for publication in Earth, Planets and Space
- Subjects :
- Computer simulation
Solar energetic particles
Coordinate system
FOS: Physical sciences
Magnetosphere
Geology
Space weather
Space Physics (physics.space-ph)
Computational physics
Astrophysics - Solar and Stellar Astrophysics
Physics - Space Physics
Space and Planetary Science
Physics::Space Physics
Astrophysics::Solar and Stellar Astrophysics
Convection–diffusion equation
Interplanetary spaceflight
Event (particle physics)
Solar and Stellar Astrophysics (astro-ph.SR)
Subjects
Details
- Language :
- English
- ISSN :
- 18805981
- Volume :
- 67
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Earth, Planets and Space
- Accession number :
- edsair.doi.dedup.....c96c50e329ff7afa8a7e94d28c80b4d4
- Full Text :
- https://doi.org/10.1186/s40623-015-0260-9