Initiation and chromospheric effects of a M1.0 class solar flare from high-resolution multi-wavelength observations
| Autor: | S. Vargas Domínguez, Viacheslav M. Sadykov, Alexander G. Kosovichev, Ivan Zimovets, I. N. Sharykin |
|---|---|
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Proceedings of the International Astronomical Union. 12:103-108 |
| ISSN: | 1743-9221 1743-9213 |
| DOI: | 10.1017/s1743921317003994 |
| Popis: | Initiation and development of a M 1.0 class flare of June 12, 2014, was observed by space and ground-based telescopes, including EUV and X-ray imaging spectroscopy by IRIS and RHESSI, and high-resolution optical imaging by 1.6 m New Solar Telescope (NST). Analyzing the NST data, we found small-scale loop-like structures in the region of the magnetic field Polarity Inversion Line (PIL), the emergence and interaction of which caused photospheric brightenings temporarily coinciding with hard X-ray impulses. Detailed studies of the PIL region reveal signatures of photospheric plasma downflows and dissipation of electric currents. The reconstructed magnetic field topology shows a bundle of lines connecting the PIL region with the flare ribbons which were places of chromospheric evaporation observed by IRIS. The observations suggest a scenario with the primary energy release processes located in the low atmospheric layers of the PIL, energizing the overlying large-scale magnetic structure and causing “gentle” chromospheric evaporation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|