Faculae, filigree and calcium bright points

Details Faculae, filigree and calcium bright points Faculae, filigree and calcium bright points

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981soph...69....9w&link_type=abstract

Solar Physics, vol. 69, Jan. 1981, p. 9-14.

Physics

30

Calcium, Faculae, Fine Structure, H Alpha Line, Photosphere, Solar Atmosphere, Astronomical Maps, Solar Limb

Scientific paper

Simultaneous observations of fine structure photospheric features at several wavelengths are described. The observations, which include regions near disk center and at the limb, were obtained using a narrow band calcium filter and selected wavelengths in Mg B1, the red wing of H-alpha and the H-alpha continuum using the Universal Birefringent Filter of the Sacramento Peak Observatory. From the disk-center series it is concluded that bright point structures seen in calcium are cospatial with the H-alpha filigree and are related in origin. The limb photographs confirm that the calcium network is cospatial with the white light faculae. However, in regions of good seeing it is clear that even at the limb the calcium network patterns consist of individual bright points which are essentially the same as those seen near disk center. Thus it is concluded that the white light faculae, the H-alpha filigree and the calcium bright points are different manifestations of the same photospheric features.

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