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Table 1.

Estimated EW of Fe XXV (1s2–1s2p) and Fe XXVI (1s–2p) absorption line from model spectra (Sect. 5.1.3) and by fitting fake-spectra with multiple Gaussians (Sect. 5.2.2) for different magnetisations.

μ Fe XXV Fe XXVI


Model spectra Fake-spectra Model spectra Fake-spectra


XRISM Athena XRISM Athena
0.0010 6.3 6.3 (4.0–8.8) 6.7 (4.5–8.7) 27.1 31.1 (22.6–39.8) 27.2 (19.4–35.2)
0.0029 5.4 4.2 (3.1–5.5) 6.3 (4.9–7.7) 22.2 20.4 (14.4–26.9) 28.2 (16.6–41.6)
0.0059 3.9 4.6 (2.7–6.5) 4.4 (2.7–5.1) 18.1 19.8 (15.7–23.9) 18.3 (12.6–23.2)
0.0160 3.0 2.8 (2.3–3.6) 3.0 (2.2–3.9) 16.0 15.5 (12.3–18.7) 16.1 (14.2–18.0)
0.0674 3.5 3.1 (2.5–3.9) 3.5 (2.8–4.3) 16.6 15.0 (12.6–17.2) 17.6 (11.7–23.4)

Notes. All the EWs are presented in eV. The range in brackets represents the 90% confidence range from fitting.

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