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Continuum emission enhancements and penumbral changes observed during flares by IRIS, ROSA, and Hinode
Fletcher, L.; Mathioudakis, M.; Guglielmino, S. L. +6 more
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, observ…
Satellite observations of reconnection between emerging and pre-existing small-scale magnetic fields
Young, P. R.; Guglielmino, S. L.; Romano, P. +2 more
We report multi-wavelength ultraviolet observations taken with the IRIS satellite, concerning the emergence phase in the upper chromosphere and transition region of an emerging flux region (EFR) embedded in the unipolar plage of active region NOAA 12529. The photospheric configuration of the EFR is analyzed in detail benefitting from measurements …