Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...249..390m&link_type=abstract
Astrophysical Journal, Part 1, vol. 249, Oct. 1, 1981, p. 390-393.
Astronomy and Astrophysics
Astrophysics
35
Brightness Distribution, Fine Structure, Penumbras, Photosphere, Solar Magnetic Field, Space Observations (From Earth), Sunspots, Astronomical Photography, Chromosphere, High Resolution
Scientific paper
An exceptionally highly resolved sunspot photograph is presented which reveals the fine-scale structure of the photospheric penumbra down to 0.2 arcsec. The photograph was taken through a glass filter in a 170-A FWHM band centered on 4660 A on the 65-cm vacuum Gregorian telescope at Big Bear Solar Observatory during practically perfect seeing. The photograph reveals the penumbra to be full of extremely fine-scale fibril structures, with apparent widths near the resolution limit. The three-dimensional structure of the photospheric penumbra is seen to be similar to that of the chromospheric penumbra and superpenumbra, with dark fibrils arching above a lower brighter structure and many of the bright fibrils representing portions of wider bright structures shining through the narrow spaces between the elevated dark fibrils. Thus, in contrast to previous pictures, much of the dark component of the photospheric penumbra is not physically analogous to the intergranular dark lanes in the normal photosphere.
No associations
LandOfFree
Structure of the sunspot penumbra 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 Structure of the sunspot penumbra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structure of the sunspot penumbra will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1468573