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Volume 553, May 2013
Article Number L10
Number of page(s) 5
Section Letters
DOI https://doi.org/10.1051/0004-6361/201321465
Published online 22 May 2013

Online material

Appendix A: Online movies

The Hi-C sounding rocket took data on 12 July 2012 from 18:51:52 UT to 18:55:13 UT centred on an active region at (−1300, −4533) from disk centre. The images were obtained in the 193 Å passband (spectral width −5 Å). Data from the Solar Dynamic Observatory Atmospheric Imaging Assembly (SDO/AIA) were also used in our analysis. The AIA images are taken on the same day and show the time period 18:40:47−19:04:47 UT.

Movie 1 (Access here)

Movie 2 (Access here)

Movie 3 (Access here)

Movie 4 (Access here)

Movie 5 (Access here)

thumbnail Fig. A.1

Active region as observed with Hi-C 193 Å. Movie 1 (M1) focuses on the coronal structure labelled A in the main text and parts Movie 3 (M3) focuses on the coronal structure labelled B in the manuscript. The boxes show the sub-regions of the Hi-C field of view in each movie.

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thumbnail Fig. A.2

Still from Movie 1. The movie shows a unique view of coronal structures as seen with Hi-C (labelled A in the manuscript). The high resolution reveals fine-scale structure that is at the diffraction limit of SDO/AIA. Even though the time-series is short, it is possible to see flows and waves along these structures, in particular in the fibrils and the spicular features, some of which show enhanced emission. In contrast, the coronal structures do not show the same level of dynamic behaviour. Over the short time-scales (< 200 s), little motion of the loops is observed, which is reflected by the measured small-amplitude transverse wave motion in the time-distance diagrams (Fig. 2 – main text). The left panel displays the log intensity images and the right panel shows the unsharp masked version.

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thumbnail Fig. A.3

Still from Movie 2. The movie shows the same coronal structure as that in Movie 1 as observed with SDO/AIA in 193 Å. The field of view of the movie covers a slightly larger region than Movie 1. Comparing this to Movie 1, it can be seen that AIA does not resolve the fine structure seen in Hi-C. The time period that corresponds to the Hi-C data is between 660 s to 870 s.

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thumbnail Fig. A.4

Still from Movie 3. The movie displays the coronal structure labelled B in the manuscript, observed with Hi-C. The absence of observable motion in the loop structure is reflected by the lack of measurable wave motion in the time-distance diagrams (Fig. 3 – main text).

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thumbnail Fig. A.5

Still from Movie 4. The movie is of the same coronal structure as in Movie 3 but observed with AIA 193 Å. The field of view covers a slightly large region than that of Movie 3. The time period corresponding to the Hi-C data is from 660 s to 870 s.

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thumbnail Fig. A.6

Still from Movie 5, showing the region observed by AIA 171 Å that is displayed in Fig. 1 in the main text. The coronal structures labelled A, B, 1, 2 and 3 are all visible in the movie. Note the visible motion in feature 3, in which the analysis finds relatively large velocity amplitude (> 5 km s-1) transverse displacements. This is compared with the other structures, where our analysis revealed only small velocity amplitudes.

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© ESO, 2013

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