Table 1
List of spike features in the 
spectrum of Obs. 3814 with a significance > 2σ and associated lines, which are defined as having a distance of < 0.05 Å to the features.
| Spike (Å) | σ | Ion | Line(s) | Wl. (Å) | Ref. |
|---|---|---|---|---|---|
| 4.37 | 2.0 | ||||
| 5.30 | 2.0 | S X | L-shell | 5.275 | 5, b |
| 5.32 | 2.3 | ||||
| 6.18 | 2.5 | Si XIV | Ly α | 6.182 | 6, b |
| 6.65 | 3.8 | Si XIII | i [em.] | 6.685 | 3, b |
| Si XIII | He α | 6.648 | 3, b | ||
| Al XII | He β | 6.64 | a | ||
| 6.78 | 2.8 | Fe XXIV | 2p → 7d | 6.809 | 1 |
| Fe XXIV | 2s → 6p | 6.787 | 1 | ||
| Si XI | L-shell | 6.784 | 5, b | ||
| Si I | Kβ | 6.753 | 2 | ||
| Fe XXIV | 2p → 7d | 6.751 | 1 | ||
| Si XIII | f [em.] | 6.740 | 3, a | ||
| Mg XII | Ly γ | 6.738 | 4 | ||
| 6.83 | 2.3 | Si X | L-shell | 6.856 | 5, b |
| 6.85 | 4.5 | Fe XXIV | 2p → 7d | 6.809 | 1 |
| Fe XXIV | 2s → 6p | 6.787 | 1 | ||
| 6.90 | 2.5 | Fe XXIV | 2p → 6s | 6.982 | 1 |
| 6.92 | 5.7 | Fe XXIV | 2p → 6d | 6.970 | 1 |
| 6.93 | 4.4 | Si IX | L-shell | 6.928 | 5, b |
| 6.98 | 2.1 | Fe XXIV | 2p → 6d | 7.033 | 1 |
| Si VIII | L-shell | 6.996 | 5, b | ||
| Fe XXIV | 2p → 6s | 6.982 | 1 | ||
| Fe XXIV | 2p → 6d | 6.970 | 1 | ||
| 8.05 | 2.2 | Fe XXIV | 2p → 5d | 8.059 | 1 |
| Na XI | Ly γ | 8.021 | 4, a | ||
| 9.28 | 2.2 | Mg XI | f [em.] | 9.314 | 3, a |
| Ne X | Ly ζ | 9.29 | a | ||
| Ne X | Ly η | 9.25 | a | ||
| Ne IX | i [em.] | 9.23 | a | ||
| 9.37 | 3.3 | Ne X | Ly ϵ | 9.36 | a |
| 9.48 | 2.1 | Fe XXVI | 2s → 3p | 9.536 | 1 |
| 9.50 | 3.4 | Fe XXVI | 2p → 3d | 9.532 | 1 |
| Mg I | Kβ | 9.521 | 2 | ||
| Ne X | Ly δ | 9.481 | 4, a | ||
| 10.01 | 2.1 | Fe XVII | 2s22p6 → 2s2p65p | 10.102 | 1 |
| Fe XXV | 2s → 3p | 10.037 | 1 | ||
| Na XI | Ly α | 10.025 | 6, a | ||
| 10.63 | 2.2 | Fe XIX | 2p4 → 2p34d | 10.664 | 1 |
| Fe XXIV | 2s → 3p | 10.663 | 1 | ||
| Fe XVII | 2p6 → 2p56d | 10.658 | 1 | ||
| Ne IX | He ϵ | 10.643 | 8, a | ||
| Fe XXIV | 2s → 3p | 10.619 | 1 | ||
| 11.57 | 2.8 | Na I | Kβ | 11.575 | 2 |
| Ne IX | He β | 11.546 | 7, a | ||
| Fe XVIII | 2p5 → 2p44d | 11.539 | 1 | ||
| Fe XVIII | 2p5 → 2p44d | 11.524 | 1 | ||
| 12.47 | 2.1 | Fe XX | 2p4 → 2p33d | 12.475 | 1 |
| Fe XXI | 2p2 → 2p3d | 12.445 | 1 | ||
| 12.57 | 2.2 | Fe XX | 2s2 2p3 → 2s 2p3 3p | 12.576 | 1 |
| Fe XXI | 2p3 → 2p23d | 12.602 | 1 | ||
| Fe XX | 2p4 → 2p33d | 12.592 | 1 | ||
| Fe XX | 2s22p3 → 2s2p33p | 12.570 | 1 | ||
| Fe XX | 2s22p3 → 2s2p33p | 12.569 | 1 | ||
| Fe XX | 2s22p3 → 2s2p33p | 12.558 | 1 | ||
| 12.70 | 2.3 | Fe XXII | 2p2 → 2p3s | 12.710 | 1 |
| Fe XVII | 2p6 → 2p54s | 12.702 | 1 | ||
| 12.85 | 3.2 | Fe XX | 2p3 → 2p23d | 12.867 | 1 |
| Fe XX | 2p3 → 2p23d | 12.809 | 1 | ||
| Fe XVIII | 2s22p5 → 2s2p53p | 12.801 | 1 | ||
Notes. The listed lines are compiled the selection described in Sect. 3.4 and previous analyses of the data: (a) Hanke et al. (2009) and (b) Hirsch et al. (2019). Primary references are numbered and given below. (a) obtain line energies from (1, 8). (5) measure blended line complexes (‘L-shell’ for short in the table). Lines listed multiple times with different wavelengths differ in the fine structure. Emission lines are marked with [em.]. Iron lines are exclusively from AtomDB.
References. (1) AtomDB (http://www.atomdb.org/), (2) Bearden (1967), (3) Drake (1988), (4) Garcia & Mack (1965), (5) Hell et al. (2016), (6) Johnson & Soff (1985), (7) Liao et al. (2013), (8) Verner et al. (1996).
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