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Figure 1: Partial frame of BBSO magnetograms of the three blinker examples. The images are obtained by averaging over 15 min and are scaled from -15 to 15 Gauss. The units in Y and X axes are "arcsec''. |
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Figure 2: Upper panels: three blinker events as seen in the N V 1238.82 Å intensity images, obtained by integrating over the spectral line width with the background included. Bottom panels: doppler shift images obtained by automatic fitting a single Gaussian. The areas indicated with `BL' and dashed dotted lines represent the analysed blinker event region. The explosive events are clearly identified as the short-duration/large blue-shift features (i.e. the dark features in the plot). The units in the Y axes are "arcsec''. |
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Figure 3: The SUMER N V 1238 Å line profiles shown in a blinker brightening (solid line), during an explosive event (dashed line) and in the network (dotted line). |
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Figure 4: a) CDS O V 629 Å radiance profile of blinker BL1 obtained by integrating over the blinker area. b) CDS O V 629 Å radiance profile in a single solar_X pixel in which the SUMER slit was centered. c) SUMER N V 1238 Å radiance profile after binning over 6 spectra in order to obtain the CDS cadence. d) SUMER radiance profile in a single pixel from the blinker area. e) Doppler shift profile in the same pixel as d) using N V 1238 Å. |
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Figure 5: a) CDS O V 629 Å radiance profile of blinker BL2 obtained by integrating over the blinker area. b) CDS O V 629 Å radiance profile in a single solar_X pixel in which the SUMER slit was centered. c) SUMER N V 1238 Å radiance profile after binning over 6 spectra in order to obtain the CDS cadence. d) SUMER radiance profile in a single pixel from the blinker area. e) Doppler shift profile in the same pixel as d) using N V 1238 Å. |
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Figure 6: a) CDS O V 629 Å radiance profile of blinker BL3 obtained by integrating over the blinker area. b) CDS O V 629 Å radiance profile in a single solar_X pixel in which the SUMER slit was centered. c) SUMER N V 1238 Å radiance profile after binning over 6 spectra in order to obtain the CDS cadence. d) SUMER radiance profile in a single pixel from the blinker area. e) Doppler shift profile in the same pixel as d) using N V 1238 Å. |
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Figure 7: a) CDS O V 629 Å radiance profile of blinker BL1 obtained integrating over the blinker area. b) The total magnetic flux from positive polarities fragments above 40 Gauss. c) The total magnetic flux from negative polarities fragments above 25 Gauss. |
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Figure 8: a) CDS O V 629 Å radiance profile of blinker BL2 obtained by integrating over the blinker area. b) The total magnetic flux from positive polarities fragments above 40 Gauss. c) The total magnetic flux from negative polarities fragments above 25 Gauss. |
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Figure 9: a) CDS O V 629 Å radiance profile of blinker BL3 obtained by integrating over the blinker area. b) The total magnetic flux from positive polarity fragments above 40 Gauss. c) The total magnetic flux from negative polarity fragments above 25 Gauss. |
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Figure 10: Left panel: the SUMER N V 1238 Å line profile during (solid line) and after (dashed line) an explosive event. The profile is obtained by binning over 6 pixels along the slit. Right panel: the CDS O V 629 Å line profile during (solid line) and after (dashed line) the explosive event shown in the left panel as identified in the SUMER data. The profiles are obtained by binning over 3 pixel in Solar_Y direction. |
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Figure 11: a) CDS O V 629 Å radiance profile obtained by integrating over the explosive event area. b) SUMER N V 1238 Å radiance profile after binning over 6 spectra in order to obtain the CDS cadence. c) SUMER radiance profile in a single pixel from the explosive event without binning. d) Doppler shift profile in the same pixel as c). An automatic single Gaussian fit has been performed to obtain the Doppler shift shown in in this figure. Since the blue wing of explosive events is usually the predominant one, such a fitting will produce a Gaussian profile towards the blue. We show in the left panel of Fig. 10 the N V 1238 Å line profile during this explosive event (solid line). |
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Figure 12: a) CDS O V 629 Å radiance profile obtained by integrating over the explosive event area. b) SUMER N V 1238 Å radiance profile after binning over 6 spectra in order to obtain the CDS cadence. c) SUMER radiance profile in a single pixel from the explosive event without binning. d) Doppler shift profile in the same pixel as c). |
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Figure 13: Intensity images in O V 629 Å (upper panel) and N V 1238 Å (bottom panel) obtained on 31 August 1996. The scan covers a polar region showing the network and numerous spicules (Wilhelm 2000). |
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