Continuum emission enhancements and penumbral changes observed during flares by IRIS, ROSA, and Hinode

Autor:	Zuccarello, F., Guglielmino, S. L., Capparelli, V., Mathioudakis, M., Keys, P., Fletcher, L., Criscuoli, S., Falco, M., Murabito, M.
Rok vydání:	2019
Předmět:	Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1393/ncc/i2019-19013-2
Popis:	In this paper we describe observations acquired by satellite instruments (Hinode/SOT and IRIS) and ground-based telescopes (ROSA@DST) during two consecutive C7.0 and X1.6 flares occurred in active region NOAA 12205 on 2014 November 7. The analysis of these data show the presence of continuum enhancements during the evolution of the events, observed both in ROSA images and in IRIS spectra. Moreover, we analyze the role played by the evolution of the $\delta$ sunspots of the active region in the flare triggering, indicating the disappearance of a large portion of penumbra around these sunspots. Comment: 3 pages, 2 figures, to be published in "Nuovo Cimento C" as proceeding of the Third Meeting of the Italian Solar and Heliospheric Community
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1901.01732 Zobrazit plný text záznamu View this record from Arxiv