Table 1
Results of our seismological analysis for a contracting loop (SOL2012-03-09; Sect. 2.1) and a displaced loop (SOL2012-10-20; Sect. 2.2).
| Date | 2012-03-09 | 2012-10-20 |
| Time (UT) | 03:36:00 | 18:08:35 |
|
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||
| Bayesian analysis | ||
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||
| Oscillation start time t0 (min) |
|
|
| Alfvén transit time TA0 (min) |
|
|
| Density contrast ratio ρ0/ρe |
|
|
| Inhomogeneous layer width ϵ |
|
|
| Fundamental amplitude A1 (Mm) |
|
|
| 2nd harmonic amplitude A2 (Mm) |
|
|
| 3rd harmonic amplitude A3 (Mm) |
|
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| Equilibrium amplitude Aeqm (Mm) |
|
|
| Equilibrium timescale τeqm (min) |
|
|
| Loop position error σy (Mm) | 0.19 | 0.15 |
|
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| Additional estimates | ||
|
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| Loop length L (Mm) | 234.5 ± 2.0 | 347 ± 31 |
| Kink speed Ck (Mm/s) | 1.76 ± 0.28 | 2.03 ± 0.23 |
| Internal Alfvén speed CA0 (Mm/s) | 1.44 ± 0.11 | 1.84 ± 0.19 |
| External Alfvén speed CAe (Mm/s) | 2.47 ± 0.39 | 2.29 ± 0.26 |
| Magnetic field strength B0 (G) | 12.8 ± 2.0 | 11.9 ± 1.4 |
| Phase mixing timescale τA (s) | 26 ± 12 | 197 ± 166 |
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|
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| ytrend-Pk linear correlation coefficient | 0.996 | 0.561 |
| Interpretation of equilibrium shift | Contraction | Displacement |
| Kink mode polarisation | Vertical | Horizontal |
Notes. The event time corresponds to when the analysed data begins, with the oscillation start time t0 measured relative to this. Posterior summaries are given at the median and uncertainties by the 95% credible interval. Additional estimates based on the loop length and a plasma density of ne = 1015 m-3 are also listed (see Sect. 4.1).
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