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High-Resolution Observations of Emerging Magnetic Fields and Flux Tubes in Active Region Photosphere

Published online by Cambridge University Press:  08 February 2017

T. Tarbell ,
S. Ferguson ,
Z. Frank ,
R. Shine ,
A. Title ,
K. Topka  and
G. Scharmer
T. Tarbell
Affiliation:
Lockheed Palo Alto Research Laboratory 3251 Hanover Street, Palo Alto, California 94304, USA
S. Ferguson
Affiliation:
Lockheed Palo Alto Research Laboratory 3251 Hanover Street, Palo Alto, California 94304, USA
Z. Frank
Affiliation:
Lockheed Palo Alto Research Laboratory 3251 Hanover Street, Palo Alto, California 94304, USA
R. Shine
Affiliation:
Lockheed Palo Alto Research Laboratory 3251 Hanover Street, Palo Alto, California 94304, USA
A. Title
Affiliation:
Lockheed Palo Alto Research Laboratory 3251 Hanover Street, Palo Alto, California 94304, USA
K. Topka
Affiliation:
Lockheed Palo Alto Research Laboratory 3251 Hanover Street, Palo Alto, California 94304, USA
G. Scharmer
Affiliation:
Royal Swedish Academy of Sciences Stockholm Observatory, S-133 00 Saltsjöbaden, Sweden

Extract

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On 29 September 1988, filtergrams of the solar photosphere with excellent resolution (0.3 to 0.5 arcsecond) were obtained at the Swedish Solar Observatory on La Palma, Canary Islands. An outstanding 2.5 hour run of digital filtergram observations was obtained, looking at a small area within an active region near disk center. On 6 August 1987, an 80 minute run of similar observations was obtained at the Vacuum Tower Telescope of the National Solar Observatory at Sacramento Peak. Digital and video movies have been made of Dopplergrams, magnetograms, line center, continuum, and white light images. Several examples of magnetic field emergence and formation of flux tubes can be studied in detail in the movies. The relationship between photospheric bright points, “filigree”, the line center brightness, and the magnetic field has been established for individual images in analysis to date.

Type
III. Small-Scale Magnetic Fields
Information
Symposium - International Astronomical Union , Volume 138: Solar Photosphere: Structure, Convection and Magnetic Fields , 1990 , pp. 147 - 152
Copyright
Copyright © Kluwer 1990 

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