Chromospheric Observations of a Kink Wave in an On-disk Active Region Fibril

Details Chromospheric Observations of a Kink Wave in an On-disk Active Region Fibril Chromospheric Observations of a Kink Wave in an On-disk Active Region Fibril

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh13b1951p&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SH13B-1951

Astronomy and Astrophysics

Astrophysics

[7507] Solar Physics, Astrophysics, And Astronomy / Chromosphere, [7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields

Scientific paper

Most observations of kink and Alfven waves in the chromosphere are made in off-limb spicules. Here we present observations of a kink wave in high spatial and temporal resolution Ca II 8542 data of an active region fibril on the solar disk. The properties of the observed wave are similar to kink waves in spicules. From the inferred wave phase and period we estimate the lower limit for the field strength in the chromospheric fibril to be a few hundred Gauss. The observations indicate that the event may have been triggered by a small-scale reconnection event higher up in the atmosphere.

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