An example of the cancellation of magnetic fields during the decay of an active region

A case of cancellation of magnetic fields is observed during the decay of a small active region. Three different sources of information were simultaneously used: high resolution magnetograms, chromospheric Ca I I filtergrams and transverse velocity fields. A magnetic structure is apparently dragged...

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Bibliographic Details
Published inSolar physics Vol. 124; no. 2; pp. 219 - 226
Main Authors GARCIA DE LA ROSA, J. I, ABALLE, M. A, COLLADOS, M
Format Journal Article
LanguageEnglish
Published Boston, MA Reidel 01.09.1989
Dordrecht
Subjects
Astronomy
Earth, ocean, space
Exact sciences and technology
Other topics on the solar system
Solar system
Solar activity
Granulation
Magnetogram
Active region
Velocity distribution
Solar magnetic field
Spectroscopical observation
Sun
Finding chart
Solar photosphere
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Summary:A case of cancellation of magnetic fields is observed during the decay of a small active region. Three different sources of information were simultaneously used: high resolution magnetograms, chromospheric Ca I I filtergrams and transverse velocity fields. A magnetic structure is apparently dragged to the network by the supergranular velocity field while it splits into two. There, they meet another structure with opposite magnetic polarity. After a period of coexistence, the magnetic pairs vanish, leaving no trace of either magnetic or chromospheric structures.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0038-0938
1573-093X
DOI:10.1007/BF00156267