33 citations · 110 across the 5 of their papers we have counts for
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astro-ph.SR2019★ 23 cited
Spectral characteristic of mid-term quasi-periodicities in sunspots data
P. Frick, D. Sokoloff, R. Stepanov +2
Numerous analyses suggest the existence of various quasi-periodicities in solar activity. The power spectrum of solar activity recorded in sunspot data is dominated by the 11…
astro-ph.SR2019★ 14 cited
A short and sudden increase of the magnetic field strength and the accompanying spectral variability in the O9.7V star HD54879
S. Hubrig, M. Kueker, S. P. Jarvinen +4
Only eleven O-type stars have been confirmed to possess large-scale organized magnetic fields. The presence of a -600G longitudinal magnetic field in the O9.7V star HD54879 with a…