44. Running penumbral waves observed in the sunspot photosphere
Multiple-wavelength high-resolution observations reveal running penumbral waves in the middle photosphere, with an apparent horizontal speed of up to 51 km/s.
Tag Archives: penumbra
43. Detection of Fast-Moving Waves Propagating Outward along Sunspots’ Radial Direction in the Photosphere
A newly discovered, fast-moving wave propagates outward along sunspots’ radial direction and may provide new diagnostics of the sunspot subsurface structure.