Dynamic Properties along the Neutral Line of a Delta Spot Inferred from High-resolution Observations

摘要: Delta (δ) spots are complex magnetic configurations of sunspots characterized by umbrae opposite polarity sharing a common penumbra. In order to investigate the fine structure region separating two polarities δ spot, we studied morphology, configuration, and velocity field in such using observations active (AR) NOAA 11267 obtained with CRisp Imaging SpectroPolarimeter (CRISP) at Swedish Solar Telescope on 2011 August 6. The analysis CRISP data shows upflows downflows ∼ ± 3 km s{sup –1} proximity spot inversion line (PIL), horizontal motions along PIL ∼1 –1}. results from SIR also indicate that transverse brighter is tilted about ∼45° respect PIL. Dynamics Observatory/Helioseismic Magnetic Imager confirm presence PIL, which were observed last 15 hr. From analyzed, conclude steady, persistent, subsonicmore » can be interpreted as being due Evershed flows occurring penumbral filaments show curved, wrapped configuration. fluting their bending, continuously increased approaching motion negative umbra toward positive one, give rise line-of-sight maps observed.« less