A Self-consistent simulation of proton acceleration and transport near a high-speed solar wind stream
Solar wind stream interaction regions (SIRs) are often characterized by energetic ion enhancements. The mechanisms accelerating these particles, as well as the locations where the acceleration occurs, remain debated. Here, we report the findings of a simulation of a SIR event observed by Parker Sola...
| Authors: | ; ; ; ; ; |
|---|---|
| Format: | Article |
| Status: | Published version |
| Publication date: | 2021 |
| Country: | España |
| Institution: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repository: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/175335 |
| Online Access: | https://hdl.handle.net/2445/175335 |
| Access Level: | Open access |
| Keyword: | Vent solar Acceleradors de partícules Solar wind Particle accelerators |
| _version_ | 1878742621478715392 |
|---|---|
| author | Wijsen, Nicolas |
| author2 | Samara, Evangelia Aran i Sensat, Maria dels Àngels Lario, David Pomoell, Jens Poedts, Stefaan |
| author2_role | author author author author author |
| author_browse | Aran i Sensat, Maria dels Àngels Lario, David Poedts, Stefaan Pomoell, Jens Samara, Evangelia Wijsen, Nicolas |
| author_facet | Wijsen, Nicolas Samara, Evangelia Aran i Sensat, Maria dels Àngels Lario, David Pomoell, Jens Poedts, Stefaan |
| author_role | author |
| collection | Recercat. Dipósit de la Recerca de Catalunya |
| description | Solar wind stream interaction regions (SIRs) are often characterized by energetic ion enhancements. The mechanisms accelerating these particles, as well as the locations where the acceleration occurs, remain debated. Here, we report the findings of a simulation of a SIR event observed by Parker Solar Probe at ~0.56 au and the Solar Terrestrial Relations Observatory-Ahead at ~0.95 au in 2019 September when both spacecraft were approximately radially aligned with the Sun. The simulation reproduces the solar wind configuration and the energetic particle enhancements observed by both spacecraft. Our results show that the energetic particles are produced at the compression waves associated with the SIR and that the suprathermal tail of the solar wind is a good candidate to provide the seed population for particle acceleration. The simulation confirms that the acceleration process does not require shock waves and can already commence within Earth's orbit, with an energy dependence on the precise location where particles are accelerated. The three-dimensional configuration of the solar wind streams strongly modulates the energetic particle distributions, illustrating the necessity of advanced models to understand these particle events. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_f942e88c6b3cc2fccbb39a67fe0c66c0 |
| institution | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| instname_str | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:recercat.cat:2445/175335 |
| publishDate | 2021 |
| publishDateSort | 2021 |
| publisher | Institute of Physics (IOP) |
| publisherStr | Institute of Physics (IOP) |
| reponame_str | Recercat. Dipósit de la Recerca de Catalunya |
| spelling | A Self-consistent simulation of proton acceleration and transport near a high-speed solar wind stream Wijsen, Nicolas Samara, Evangelia Aran i Sensat, Maria dels Àngels Lario, David Pomoell, Jens Poedts, Stefaan Vent solar Acceleradors de partícules Solar wind Particle accelerators Solar wind stream interaction regions (SIRs) are often characterized by energetic ion enhancements. The mechanisms accelerating these particles, as well as the locations where the acceleration occurs, remain debated. Here, we report the findings of a simulation of a SIR event observed by Parker Solar Probe at ~0.56 au and the Solar Terrestrial Relations Observatory-Ahead at ~0.95 au in 2019 September when both spacecraft were approximately radially aligned with the Sun. The simulation reproduces the solar wind configuration and the energetic particle enhancements observed by both spacecraft. Our results show that the energetic particles are produced at the compression waves associated with the SIR and that the suprathermal tail of the solar wind is a good candidate to provide the seed population for particle acceleration. The simulation confirms that the acceleration process does not require shock waves and can already commence within Earth's orbit, with an energy dependence on the precise location where particles are accelerated. The three-dimensional configuration of the solar wind streams strongly modulates the energetic particle distributions, illustrating the necessity of advanced models to understand these particle events. Institute of Physics (IOP) https://hdl.handle.net/2445/175335 |
| spellingShingle | A Self-consistent simulation of proton acceleration and transport near a high-speed solar wind stream Wijsen, Nicolas Vent solar Acceleradors de partícules Solar wind Particle accelerators |
| status_str | publishedVersion |
| title | A Self-consistent simulation of proton acceleration and transport near a high-speed solar wind stream |
| title_full | A Self-consistent simulation of proton acceleration and transport near a high-speed solar wind stream |
| title_fullStr | A Self-consistent simulation of proton acceleration and transport near a high-speed solar wind stream |
| title_full_unstemmed | A Self-consistent simulation of proton acceleration and transport near a high-speed solar wind stream |
| title_short | A Self-consistent simulation of proton acceleration and transport near a high-speed solar wind stream |
| title_sort | A Self-consistent simulation of proton acceleration and transport near a high-speed solar wind stream |
| topic | Vent solar Acceleradors de partícules Solar wind Particle accelerators |
| topic_facet | Vent solar Acceleradors de partícules Solar wind Particle accelerators |
| url | https://hdl.handle.net/2445/175335 |