Integral field spectroscopy of Na I D1/D2 lines reveals standing ~5.5 mHz oscillations at a sunspot umbral center indicating resonance-cavity dynamics, with propagating modes and damping at the boundary.
Nature Astronomy , year = 2023, month = jul, volume =
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Multi-height Hα observations of a sunspot reveal standing and propagating slow magnetoacoustic waves whose phase relations support a non-ideal chromospheric acoustic resonator model.
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Standing oscillations in a resonant sunspot atmosphere captured by integral field spectroscopy
Integral field spectroscopy of Na I D1/D2 lines reveals standing ~5.5 mHz oscillations at a sunspot umbral center indicating resonance-cavity dynamics, with propagating modes and damping at the boundary.
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Chromospheric resonator model for sunspot revealed by multi-height observation of umbral wave
Multi-height Hα observations of a sunspot reveal standing and propagating slow magnetoacoustic waves whose phase relations support a non-ideal chromospheric acoustic resonator model.