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astro-ph.SR2024
Stellar surface information from the Ca II H&K lines -- II. Defining better activity proxies
M. Cretignier, N. C. Hara, A. G. M. Pietrow +6
In our former paper I, we showed on the Sun that different active regions possess unique intensity profiles on the Ca II H & K lines. We now extend the analysis by showing how thos…
astro-ph.SR2024★ 3 cited
Spectral Characteristics of a Rotating Solar Prominence in Multiple Wavelengths
A. G. M. Pietrow, V. Liakh, C. M. J. Osborne +2
We present synthetic spectra corresponding to a 2.5D magnetohydrodynamical simulation of a rotating prominence in the Ca II 8542 Å, H, Ca II K, Mg II k, Ly , and Ly lines…