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| - | ===== From Solar Jets to Inner-Heliospheric Switchbacks (JET2SB) ===== | ||
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| - | From Solar Jets to Inner-Heliospheric Switchbacks (JET2SB) is a 4-years science project supported by the Agence Nationale pour la Recherche (ANR) | ||
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| - | JET2SB brings together three French solar physics teams with fully complementary expertise, using both space and ground-based observations of the solar atmosphere, in-situ measurements from heliospheric spacecrafts in synergy with comprehensive numerical modelling of the generation and propagation of solar jets from the solar atmosphere to the inner heliosphere. JET2SB is the first project to combine the expertise of the following three laboratories: | ||
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| - | ==== Summary ==== | ||
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| - | During its unprecedented approaches of the Sun, the Parker Solar Probe (PSP, NASA) mission has made the puzzling discovery of very frequent and abrupt deflections of the magnetic field, the switchbacks (SBs) in the solar wind. Because of their ubiquity in the inner heliosphere, | ||
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| - | The JET2SB project will build on the complementary expertise of three different French solar physics teams and assets, using both space and ground-based observations of the solar atmosphere, most notably using the renewed THEMIS solar telescope, in-situ measurements from PSP, in synergy with comprehensive 3D MHD numerical modeling of the generation and propagation of solar jets from the solar atmosphere to the inner heliosphere. New observations of the solar atmosphere will be used to better understand the properties of jet-like events, as well as constrain numerical models. The deterministic link between solar observations and inner-heliosphere measurements will be done thanks to 3D MHD simulations of the propagation of jets. They will produce synthetic in-situ measurements to be compared with observed ones. This will allow for a breakthrough in the interpretation and understanding of in-situ observations of SBs, in which the 3D context is absent. | ||
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| - | JET2SB will not only strengthen the French expertise in a highly competitive field, but also put it at the forefront of projects that aim at better understanding the societal impacts of solar activity, thanks to a better comprehension of the fundamental properties of Sun-Earth relationships. | ||
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| - | ==== Project positioning ==== | ||
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| - | === JETS2B Scientific objectives === | ||
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| - | The core working hypothesis of JET2SB, suggested by the previous observations, | ||
| - | * Q1) : Do, and to which extend, solar jet-like events induce Switchbacks (SBs)? | ||
| - | * Q2) : Which families/ | ||
| - | * Q3) : What are the physical mechanisms involved in the jet propagation and SB formation? | ||
| - | * Q4) : Do these mechanisms lead to energy deposition contributing to the acceleration of the solar wind? | ||
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| - | === JET2SB expected results === | ||
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| - | Each of the three work-packages of JET2SB aims at lifting these present scientific and technical barriers. For these, JET2SB will combine in a synergistic way three methodological approaches: imaging, spectroscopic and spectropolarimetric solar observations; | ||
| - | * M1. Produce/ | ||
| - | * M2. Produce innovative parametric 3D MHD numerical simulations of solar jets propagation, | ||
| - | * M3. Improve in-situ-like analysis of the numerical data in order to be compared with observations, | ||
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| - | Overall, as a fundamental science research project, JET2SB will lead to the production of advanced knowledge in Sun-Earth-relationships physics with as main immediate deliverables peer-reviewed scientific publications. JET2SB will also have middle and long-term impacts on the related topic of solar wind origins, the exploitation of upcoming coronal observations instruments and the applied discipline of space weather. In terms of research strategy, the project will put the JET2SB partners, and thus France, in a pole position to carry further researches on the connections between the Sun and the heliosphere. | ||
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