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High Resolution Observations of a White Light Flare with NST
  • Stephan Campo
Stephan Campo

Corresponding Author:[email protected]

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Abstract

Using high resolution data from the New Solar Telescope (NST) we studied fine spatial and temporal details of an M1.3 white light (WL) flare, which was one of three homologous solar flares (C6.8, M1.3, and M2.3) observed in close proximity to the west solar limb on 29 October 2014 in NOAA active region 12192. We report that the TiO WL flare consist of compact and intense cores surrounded by less intense spatial halos. The strong and compact WL cores were measured to be \(\approx\)0.2 Mm across with the area of about 10\({}^{14}\) cm\({}^{2}\). Several TiO features were not co-spatial with H\(\alpha\)  flare ribbons and displaced toward the disk center by about 500 km, which suggests that the TiO and H\(\alpha\) radiation probably did not originate in the same chromospheric volume. The observed TiO intensity enhancements are not normally distributed and are structured by the magnetic field of the penumbra.