Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| themis:science [2024/11/26 15:27] – [Planetary science with THEMIS] etienne | themis:science [2024/12/11 14:35] (current) – etienne | ||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | ===== THEMIS Scientific objectives | + | ===== THEMIS Scientific objectives ===== |
| - | + | ||
| - | The **THEMIS Solar Telescope** (Télescope Héliographique pour l’Étude du Magnétisme et des Instabilités Solaires/ **translate in english** ) primary scientific objectives center on studying the Sun's magnetic field and associated phenomena. Remarkably, THEMIS can also perform observation of near Sun objects such as Mercury and comets, in ways that are orthogonal and complementary to traditional planetary observations. | + | |
| <columns 90% - > | <columns 90% - > | ||
| + | The **THEMIS Solar Telescope** primary scientific objectives center on studying the Sun's magnetic field and associated phenomena. THEMIS name stands for " | ||
| + | Remarkably, THEMIS can also perform observation of near Sun objects such as [[themis: | ||
| + | |||
| + | |||
| ==== Instrumental and technical objectives of THEMIS ==== | ==== Instrumental and technical objectives of THEMIS ==== | ||
| Line 10: | Line 12: | ||
| === High-Resolution Spectro-polarimetry & Spectroscopy === | === High-Resolution Spectro-polarimetry & Spectroscopy === | ||
| - | The telescope specializes in **spectroscopy** and **spectropolarimetry**, | + | The telescope specializes in **spectroscopy** and **spectropolarimetry**, |
| THEMIS provides detailed information about the **[[themis: | THEMIS provides detailed information about the **[[themis: | ||
| - | THEMIS can realize a high spectral resolution observations and possess unique capabilities to measure the full Stokes parameters (the set of values that describe the polarization state of the light which is received by THEMIS), providing a complete | + | THEMIS can realize a high spectral resolution observations and possess unique capabilities to measure the full Stokes parameters (the set of values that describe the polarization state of the light which is received by THEMIS), providing a complete |
| === Reaching the telescope angular resolution limits thanks to adaptive optics === | === Reaching the telescope angular resolution limits thanks to adaptive optics === | ||
| + | |||
| + | In construction | ||
| ==== Solar physics science with THEMIS ==== | ==== Solar physics science with THEMIS ==== | ||
| Line 23: | Line 27: | ||
| === Understanding Solar Magnetism === | === Understanding Solar Magnetism === | ||
| - | THEMIS is dedicated to investigating the magnetic field of the Sun, which drives much of the solar activity, including sunspots, filaments and protuberances, | + | THEMIS is dedicated to investigating the magnetic field of the Sun, which drives much of the **[[themis: |
| THEMIS capabilities allow measurements both: | THEMIS capabilities allow measurements both: | ||
| Line 43: | Line 47: | ||
| In order answer these questions, THEMIS permits simultaneous multi-wavelength observations and the determination of the chromospheric magnetic field thanks to inversion of magnetic sensitive chromospheric lines such as He I and Ca II. | In order answer these questions, THEMIS permits simultaneous multi-wavelength observations and the determination of the chromospheric magnetic field thanks to inversion of magnetic sensitive chromospheric lines such as He I and Ca II. | ||
| - | === Study of Solar Activity === | + | === Study and Follow |
| THEMIS investigates transient events and dynamic processes in the Sun's atmosphere, including wave propagation, | THEMIS investigates transient events and dynamic processes in the Sun's atmosphere, including wave propagation, | ||
| By measuring the magnetic field that fuels solar activity, THEMIS provides insights both on the geometry of the magnetic field that stabilise large solar structures, as well as on the mechanisms and instabilities that can catastrophically destabilised them, leading to powerful solar eruptions. Either directly through spectropolarimetric imaging, or by spatially scanning a solar active region with spectroscopic slit, THEMIS can produce magnetic field maps that can be used as input for 3D reconstruction methods of the coronal magnetic field (i.e. magnetic extrapolations), | By measuring the magnetic field that fuels solar activity, THEMIS provides insights both on the geometry of the magnetic field that stabilise large solar structures, as well as on the mechanisms and instabilities that can catastrophically destabilised them, leading to powerful solar eruptions. Either directly through spectropolarimetric imaging, or by spatially scanning a solar active region with spectroscopic slit, THEMIS can produce magnetic field maps that can be used as input for 3D reconstruction methods of the coronal magnetic field (i.e. magnetic extrapolations), | ||
| - | === Follow Solar Activity Cycle === | + | Finnaly, by monitoring long-term changes in solar magnetism, THEMIS contributes to understanding the solar cycle, including the 11-year activity cycle/ |
| - | By monitoring long-term changes in solar magnetism, THEMIS contributes to understanding the solar cycle, including the 11-year activity cycle/ | + | |
| === Help Understand Space Weather === | === Help Understand Space Weather === | ||
| Line 85: | Line 88: | ||
| </ | </ | ||
| + | ==== To go further ==== | ||
| + | |||
| + | [[: | ||
| + | [[themis: | ||
| - | ---- | ||
| - | < | ||
| - | <font size=" | ||
| - | © 2024 CNRS-THEMIS <br> | ||
| - | Terms of use: unless otherwise specified, all graphical (webcam records, movies, pictures) or non-graphical material (text) from this site is property of CNRS-THEMIS: | ||
| - | </ | ||
