Table 3.
Comparison between theoretical values computed directly from the simulations and spectral best-fit values of velocity shift and dispersion, for the X-IFU pointings centered on z1, z2 and z5.
| Theoretical estimate |
Athena mock – XSPEC fit |
||||||
|---|---|---|---|---|---|---|---|
| μwFe | σwFe | μ1 (ICM only) | σ1 (ICM only) | μ1 | σ1 | Exp. | |
| [km s−1] | [km s−1] | [km s−1] | [km s−1] | [km s−1] | [km s−1] | [Ms] | |
| z1 | −1.9 | 395.3 | −37.9 ± 57.8 | 430.3 ± 54.2 | −26.0 ± 67.5 | 497.9 ± 67.9 | 0.1 |
| z2 | −0.3 | 201.3 | −65.5 ± 49.2 | 356.0 ± 54.7 | 50.6 ± 48.1 | 125.2 ± 91.4 | 0.1 |
| z5 | 3.6 | 766.9 | −120.1 ± 108.1 | 908.3 ± 98.6 | 63.1 ± 108.4 | 803.6 ± 105.5 | 0.1 |
Notes. We report the best-fit results for the spectra of the ICM emission only (columns three and four) and for the complete observations including both instrumental and physical background (columns five and six). The exposure time of the mock X-IFU observations is 100 ks for all pointings (last column).
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