Multi-Mission Observations of Relativistic Electrons and High-Speed Jets Linked to Shock Generated Transients
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| Format: | Preprint |
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2024
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| _version_ | 1866914406412058624 |
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| author | Raptis, Savvas Lindberg, Martin Liu, Terry Z. Turner, Drew L. Lalti, Ahmad Zhou, Yufei Kajdič, Primož Kouloumvakos, Athanasios Sibeck, David G. Vuorinen, Laura Michael, Adam Shumko, Mykhaylo Osmane, Adnane Krämer, Eva Turc, Lucile Karlsson, Tomas Katsavrias, Christos Wilson III, Lynn B. Madanian, Hadi Blanco-Cano, Xóchitl Cohen, Ian J. Escoubet, C. Philippe |
| author_facet | Raptis, Savvas Lindberg, Martin Liu, Terry Z. Turner, Drew L. Lalti, Ahmad Zhou, Yufei Kajdič, Primož Kouloumvakos, Athanasios Sibeck, David G. Vuorinen, Laura Michael, Adam Shumko, Mykhaylo Osmane, Adnane Krämer, Eva Turc, Lucile Karlsson, Tomas Katsavrias, Christos Wilson III, Lynn B. Madanian, Hadi Blanco-Cano, Xóchitl Cohen, Ian J. Escoubet, C. Philippe |
| contents | Shock-generated transients, such as hot flow anomalies (HFAs), upstream of planetary bow shocks, play a critical role in electron acceleration. Using multi-mission data from NASA's Magnetospheric Multiscale (MMS) and ESA's Cluster missions, we demonstrate the transmission of HFAs through Earth's quasi-parallel bow shock, associated with acceleration of electrons up to relativistic energies. Energetic electrons, initially accelerated upstream, are shown to remain broadly confined within the transmitted transient structures downstream, where betatron acceleration further boosts their energy due to elevated compression levels. Additionally, high-speed jets form at the compressive edges of HFAs, exhibiting a significant increase in dynamic pressure and potentially contributing to driving further localized compression. Our findings emphasize the efficiency of quasi-parallel shocks in driving particle acceleration far beyond the immediate shock transition region, expanding the acceleration region to a larger spatial domain. Finally, this study underscores the importance of multi-scale observational approach in understanding the convoluted processes behind collisionless shock physics and their broader implications. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_12815 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Multi-Mission Observations of Relativistic Electrons and High-Speed Jets Linked to Shock Generated Transients Raptis, Savvas Lindberg, Martin Liu, Terry Z. Turner, Drew L. Lalti, Ahmad Zhou, Yufei Kajdič, Primož Kouloumvakos, Athanasios Sibeck, David G. Vuorinen, Laura Michael, Adam Shumko, Mykhaylo Osmane, Adnane Krämer, Eva Turc, Lucile Karlsson, Tomas Katsavrias, Christos Wilson III, Lynn B. Madanian, Hadi Blanco-Cano, Xóchitl Cohen, Ian J. Escoubet, C. Philippe High Energy Astrophysical Phenomena Earth and Planetary Astrophysics Solar and Stellar Astrophysics Plasma Physics Space Physics Shock-generated transients, such as hot flow anomalies (HFAs), upstream of planetary bow shocks, play a critical role in electron acceleration. Using multi-mission data from NASA's Magnetospheric Multiscale (MMS) and ESA's Cluster missions, we demonstrate the transmission of HFAs through Earth's quasi-parallel bow shock, associated with acceleration of electrons up to relativistic energies. Energetic electrons, initially accelerated upstream, are shown to remain broadly confined within the transmitted transient structures downstream, where betatron acceleration further boosts their energy due to elevated compression levels. Additionally, high-speed jets form at the compressive edges of HFAs, exhibiting a significant increase in dynamic pressure and potentially contributing to driving further localized compression. Our findings emphasize the efficiency of quasi-parallel shocks in driving particle acceleration far beyond the immediate shock transition region, expanding the acceleration region to a larger spatial domain. Finally, this study underscores the importance of multi-scale observational approach in understanding the convoluted processes behind collisionless shock physics and their broader implications. |
| title | Multi-Mission Observations of Relativistic Electrons and High-Speed Jets Linked to Shock Generated Transients |
| topic | High Energy Astrophysical Phenomena Earth and Planetary Astrophysics Solar and Stellar Astrophysics Plasma Physics Space Physics |
| url | https://arxiv.org/abs/2411.12815 |