دورية أكاديمية
A Multi-Event Study of Early-Stage SEP Acceleration by CME-Driven Shocks—Sun to 1 AU
| العنوان: | A Multi-Event Study of Early-Stage SEP Acceleration by CME-Driven Shocks—Sun to 1 AU |
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| المؤلفون: | Kamen Kozarev, Mohamed Nedal, Rositsa Miteva, Momchil Dechev, Pietro Zucca |
| المصدر: | Frontiers in Astronomy and Space Sciences, Vol 9 (2022) |
| بيانات النشر: | Frontiers Media S.A., 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Astronomy LCC:Geophysics. Cosmic physics |
| مصطلحات موضوعية: | solar energetic particles, SEP, CME, shocks, particle acceleration, interplanetary transport, Astronomy, QB1-991, Geophysics. Cosmic physics, QC801-809 |
| الوصف: | The solar corona between below 10 solar radii is an important region for early acceleration and transport of solar energetic particles (SEPs) by coronal mass ejection-driven shock waves. There, these waves propagate into a highly variable dynamic medium with steep gradients and rapidly expanding coronal magnetic fields, which modulates the particle acceleration near the shock/wave surfaces, and the way SEPs spread into the heliosphere. We present a study modeling the acceleration of SEPs in global coronal shock events in the corona, as well as their transport to 1 au, based on telescopic observations coupled with dynamic physical models. As part of the project Solar Particle Radiation Environment Analysis and Forecasting—Acceleration and Scattering Transport (SPREAdFAST), we model the interaction of observed off-limb coronal bright fronts (CBF) with the coronal plasma from synoptic magnetohydrodynamic (MHD) simulations. We then simulate the SEP acceleration in analytical diffusive shock acceleration (DSA) model. The simulated fluxes are used as time-dependent inner boundary conditions for modeling the particle transport to 1 au. Resulting flux time series are compared with 1 au observations for validation. We summarize our findings and present implications for nowcasting SEP acceleration and heliospheric connectivity. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2296-987X |
| Relation: | https://www.frontiersin.org/articles/10.3389/fspas.2022.801429/full; https://doaj.org/toc/2296-987X |
| DOI: | 10.3389/fspas.2022.801429 |
| URL الوصول: | https://doaj.org/article/0e6e77115fe74c48a237430ff910b4b7 |
| رقم الأكسشن: | edsdoj.0e6e77115fe74c48a237430ff910b4b7 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 2296987X |
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| DOI: | 10.3389/fspas.2022.801429 |