SOHO Detects Sunspots in Solar Interior
520 views · Published 13 May 2013 · 0:35 · Indexed 30 October 2026
Channel: NASA Video · 2013 · Science & Technology
This movie showing the detected travel-time perturbations before the emergence of active region 10488 in the sun's photosphere in October 2003. The first 10 seconds of the movie show intensity observations of the Sun. The intensity later fades out and the photospheric magnetic field is shown. In the next 20 seconds, we zoom in to a region where a sunspot group would emerge. The upper layer shows magnetic field observations at the surface and the lower layer shows simultaneous travel-time perturbations, detected at a depth of about 60,000 km. After the emergence, intensity observations show the full development of this active region, until it rotates out of view on the west solar limb.
