Mapping the Magnetic Field of Flare Coronal Loops
| Autor: | Kuridze, D., Mathioudakis, M., Morgan, H., Oliver, R., Kleint, L., Zaqarashvili, T. V., Reid, A., Koza, J., L��fdahl, M. G., Hillberg, T., Kukhianidze, V., Hanslmeier, A. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
corona [Sun]
FOS: Physical sciences chromosphere [Sun] Astronomy and Astrophysics polarimeters [instrumentation] flares [Sun] Astrophysics - Solar and Stellar Astrophysics magnetic fields [Sun] Space and Planetary Science Physics::Space Physics polarimetric [techniques] Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Solar and Stellar Astrophysics (astro-ph.SR) |
| Zdroj: | Kuridze, D, Mathioudakis, M, Morgan, H, Oliver, R, Keint, L, Zaqarashvili, T V, Koza, J, Löfdahl, M G, Hillberg, T, Kukhianidze, V, Reid, A & Hanslmeier, A 2019, ' Mapping the Magnetic Field of Flare Coronal Loops ', The Astrophysical Journal, vol. 874, no. 2, 126, pp. 126 . https://doi.org/10.3847/1538-4357/ab08e9, https://doi.org/10.3847/1538-4357/ab08e9 |
| Popis: | Here we report on the unique observation of flaring coronal loops at the solar limb using high resolution imaging spectropolarimetry from the Swedish 1-meter Solar Telescope. The vantage position, orientation and nature of the chromospheric material that filled the flare loops allowed us to determine their magnetic field with unprecedented accuracy using the weak-field approximation method. Our analysis reveals coronal magnetic field strengths as high as 350 Gauss at heights up to 25 Mm above the solar limb. These measurements are substantially higher than a number of previous estimates and may have considerable implications for our current understanding of the extended solar atmosphere. 12 pages, 14 figures, accepted in ApJ |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|