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fibrille

Overview page. Subjects: Astronomy and Astrophysics.

A feature in the low chromosphere of the Sun; also spelt fibril. Fibrilles are fine dark lines arranged in a near-spiral pattern around sunspots as seen in Hα light. They are particularly...

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fibrille

Ian Ridpath.

in A Dictionary of Astronomy

January 2012; p ublished online January 2012 .

Reference Entry. Subjects: Astronomy and Astrophysics. 84 words.

A feature in the low chromosphere of the Sun; also spelt fibril. Fibrilles are fine dark lines arranged in

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fibrille

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics. 83 words.

A feature in the low chromosphere of the Sun. Fibrilles are fine dark lines arranged in a near-spiral pattern around

Go to Oxford Reference »  home page

fibrille

Overview page. Subjects: Astronomy and Astrophysics.

A feature in the low chromosphere of the Sun; also spelt fibril. Fibrilles are fine dark lines arranged in a near-spiral pattern around sunspots as seen in Hα light. They are particularly...

See overview in Oxford Index

active region

Overview page. Subjects: Astronomy and Astrophysics.

An area on the Sun where magnetic fields emerge through the photosphere into the chromosphere and corona. Active regions on the photosphere include sunspots and faculae. Their counterparts...

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penumbra

Overview page. Subjects: Astronomy and Astrophysics.

1 The outer region of the shadow cast in space by a planet or satellite; an observer within the penumbra would witness a partial eclipse. The penumbra surrounds the dark,...

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