Umbral Fine Structures in Sunspots Observed with Hinode Solar Optical Telescope

Details Umbral Fine Structures in Sunspots Observed with Hinode Solar Optical Telescope Umbral Fine Structures in Sunspots Observed with Hinode Solar Optical Telescope

2007-11-21

arxiv.org/abs/0711.3266v1

Astronomy and Astrophysics

Astrophysics

6 pages, 8 figures, accepted for publication in PASJ (Hinode Special Issue)

Scientific paper

High resolution imaging observation of a sunspot umbra was done with Hinode Solar Optical Telescope (SOT). Filtergrams in wavelengths of blue and green continuum were taken during three consecutive days. The umbra consisted of a dark core region, several diffuse components and numerous umbral dots. We derived basic properties of umbral dots (UDs), especially their temperatures, lifetimes, proper motions, spatial distribution and morphological evolution. Brightness of UDs is confirmed to depend on the brightness of their surrounding background. Several UDs show fission and fusion. Thanks to the stable condition of space observation, we could first follow the temporal behavior of these events. The derived properties of internal structure of the umbra are discussed in viewpoint of magnetoconvection in a strong magnetic field.

Affiliated with

Also associated with

No associations

Rating

Umbral Fine Structures in Sunspots Observed with Hinode Solar Optical Telescope does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Umbral Fine Structures in Sunspots Observed with Hinode Solar Optical Telescope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Umbral Fine Structures in Sunspots Observed with Hinode Solar Optical Telescope will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-413831