100 citations · 180 across the 5 of their papers we have counts for
Showing 2018Show all
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astro-ph.SR2018★ 16 cited
Spiral-shaped wavefronts in a sunspot umbra
T. Felipe, C. Kuckein, E. Khomenko +1
Solar active regions show a wide variety of oscillatory phenomena. The presence of the magnetic field leads to the appearance of several wave modes, whose behavior is determined by…
astro-ph.SR2018★ 38 cited
Height variation of the cutoff frequency in a sunspot umbra
T. Felipe, C. Kuckein, I. Thaler
In the solar atmosphere, the acoustic cutoff frequency is a local quantity which depends on the atmospheric height. It separates the low-frequency evanescent waves from the high-fr…