Back to Volume
Paper: Photospheric and Chromospheric Measurements of a High-Speed Flow near the Light Bridge of a δ-Spot
Volume: 463, 2nd ATST-EAST Workshop in Solar Physics: Magnetic Fields from the Photosphere to the Corona
Page: 43
Authors: Choudhary, D. P.; Deng, N.
Abstract: We present the results of spectropolarimetry observations of active region NOAA 9664 in photospheric Fe I 6302 Å and chromospheric Mg I b2 5872 Å spectral lines simultaneously. The active region was situated near the disk center at the time of our observations. Among several interesting features, we observe six compact, down-flow regions, each about two arc seconds in size near the magnetic neutral line. The Stokes V profiles at these locations are normal in the chromosphere but anomalous in the photosphere. The corresponding Stokes I profiles are symmetric in the chromosphere and highly asymmetric in the photosphere. We discuss possible origin of these features as a result of bending of penumbral Evershed flow channels as neutral line light bridges are formed in δ-spots.
Back to Volume