Fig. 7
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Multi-epoch observations of SSN 9 C iv λλ 1548.2, 1550.8 UV wind profile. Green line: observation taken on 22-11-2000. Blue and red lines: observations taken on 01-09-2020 and separated by ~1 h, with the blue-line spectrum observed prior to the red-line spectrum. Each of these exposures is ~40 min. A feature can be seen moving blueward on the timescale of hours.
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