Infrared lines as probes of solar magnetic features. XV. Evershed flow in cool, weak penumbral fields

Details Infrared lines as probes of solar magnetic features. XV. Evershed flow in cool, weak penumbral fields Infrared lines as probes of solar magnetic features. XV. Evershed flow in cool, weak penumbral fields

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...348l..37r&link_type=abstract

Astronomy and Astrophysics, v.348, p.L37-L40 (1999)

Astronomy and Astrophysics

Astrophysics

29

Sun: Activity, Sun: Infrared, Sun: Magnetic Fields, Sun: Photosphere, Sun: Sunspots

Scientific paper

Observations of Ti I lines at 2.2 mu m show that the Evershed flow takes
place in cool, almost horizontal channels with a low magnetic field
strength (~ 500-900 G) that does not appear to change significantly
across the penumbra. This property might allow an outward directed
siphon flow to exist along such cool flux tubes.

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