A comparative study of two X2.2 and X9.3 solar flares observed with HARPS-N - Reconciling Sun-as-a-star spectroscopy and high-spatial resolution solar observations in the context of the solar-stellar connection

Open Access

Fig. 4.

Contrast profiles spanning the entire HARPS-N time series of 10 spectral regions that are centered on the Ca II H & K, Hα, Hβ, He ID₃, Na ID₁ and D₂, Mg I 5173 Å Mn I 4031 Å, and Fe I 6173 Å. Each plot shows both the wavelength and Doppler velocity centered at each respective line versus the time starting from the beginning of the X9.3 flare.

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