Morphological evolution of an emerging flux region

Details Morphological evolution of an emerging flux region Morphological evolution of an emerging flux region

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985soph...96..229b&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 96, April 1985, p. 229-252.

Physics

40

Magnetic Flux, Photosphere, Solar Atmosphere, Solar Magnetic Field, Astronomical Photography, Flow Velocity, Morphology, Shear Flow, Solar Granulation

Scientific paper

The authors describe the morphological evolution of photospheric features in an emerging flux region (EFR), on the basis of high-resolution photographs taken with the Vacuum Tower Telescope at Sacramento Peak Observatory. Individual alignments of darkened intergranular lanes have a lifetime of only about 10 min; they may represent the tops of emerging flux loops. Roundish darkened patches within the intergranular lanes (protopores) may precede the birth of a pore, or may disappear again within a few hours. The birth of one pore coincides with the area of a conspicuous downflow observed in the spectrograms. The majority of the pores in the EFR grow in area and darken; their growth times vary between 1 and 6 hr. Various modes of growth are observed.

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