期刊
ASTROPHYSICAL JOURNAL
卷 739, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/739/2/92
关键词
Sun: chromosphere; Sun: oscillations; sunspots
资金
- WCU from the Korean Ministry of Education, Science and Technology [R31-10016]
- Science and Technology Facilities Council [PP/D002907/1, ST/H000429/1] Funding Source: researchfish
- UK Space Agency [ST/J001732/1] Funding Source: researchfish
- STFC [ST/H000429/1, PP/D002907/1] Funding Source: UKRI
We present high spatial and temporal resolution Ca II 8542 angstrom observations of a kink wave in an on-disk chromospheric active region fibril. The properties of the wave are similar to those observed in off-limb spicules. From the observed phase and period of the wave we determine a lower limit for the field strength in the chromospheric active region fibril located at the edge of a sunspot to be a few hundred gauss. We find indications that the event was triggered by a small-scale reconnection event higher up in the atmosphere.
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