White paper on the relevance of the European Solar Telescope (EST) for the French heliophysics
E. Pariat, Q. Noraz, B. Perri, N. Poirier, C. Froment, L. Bigot, G. Aulanier, B. Gelly, J. Aboudarham, S. Aizawa, O. Alexandrova, S. Alqeeq, T. Amari, F. Auchère, G. Bernoux, M. Berthomier, V. Bommier, X. Bonnin, P. Boumier, A. S. Brun, I. Bualé, E. Buchlin, A. Canou P. Canu, T. Corbard, F. Cornu, C. Coustillet, G. Cozzani, L. D'herbomez, S. Diaz Castillo, T. Dudok de Wit, M. Faurobert, A. Finley, D. Fontaine, R. A. Garcia, R. Grappin, L. Hadid, K. H. Henadhira Arachchige, M. Janvier, L. Jouve, R. Kieokaew, H. Kirkwood, B. Lavraud, J. -P. Le Breton, O. Le Contel, N. Le Nestour, F. Leblanc, S. Masson, N. Meyer-Vernet, S. Parenti, F. Pitout, M. Rieutord, J. Romero Castañeda, A. Rouillard, C. Ruiz de Galarreta, F. Sahraoui, B. Schmieder, P. Simon, A. Strugarek, M. Tallon, P. Thepthong, J. Touresse, J. -C. Vial, N. Vilmer, A. Zaslavsky
astro-ph.IM, astro-ph.SR
Submitted: 2026-06-23
Comments: 24 pages, 16 figures
License: http://creativecommons.org/licenses/by/4.0/
The gist: The project of the European Solar Telescope aims to provide a state-of-the art infrastructure to study the Sun and its interactions with Earth and the heliosphere.
Terminology
Abstract
The project of the European Solar Telescope aims to provide a state-of-the art infrastructure to study the Sun and its interactions with Earth and the heliosphere. This 4.2m aperture telescope will be equipped with multi conjugate adaptive optics, light-polarisation analyser, imaging spectrograph and integral field unit spectrographs. It will provide unprecedented observations of the solar photosphere and chromosphere and of the dynamical events and features that pertains to the low solar atmosphere. The EST project is presently in a phase of crystallisation, aiming at the creation of an European Research Infrastructure Consortium. While the French community has continuously been associated with the development of the EST project, some specific scientific aspects are more particularly relevant for the French astrophysics and heliophysics communities. The present review highlights the scientific research axes of high interest from the French community that shall strongly benefit from EST. The later will not only advance numerous topics of solar physics, as well as solar adaptive optics developments, but will also provide unrivaled datasets of high interest in the framework of space weather. This review also aims to highlight the space weather use that can be done with future EST observations, that will be particularly relevant for French heliophysicists.
Sources
- Flux rope formation through flux cancellation of sheared coronal arcades in a 3D convectively-driven MHD simulation
- Mapping the magnetic field of flare coronal loops
- Note concerning a high spectral resolution slicer for imaging spectro-polarimetry with the new generation Multichannel Subtractive Double Pass (MSDP) onboard the future EST telescope
- A proposal for imaging spectro-polarimetry with a new generation Multichannel Subtractive Double Pass (MSDP) onboard the EST telescope
- Science Requirement Document (SRD) for the European Solar Telescope (EST) (3rd Edition, December 2025)
- Compression, Impact and Hot Rebound Flows from Coronal Rain Downflows
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