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Table 3
Spectral fits to the XMM-Newton spectra of SNR J0453–6829 including its PWN.
Model vpshock ( = 1.48 for 574 d.o.f.) |
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| Component | Parameter | Valueb |
|
|
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| LMC absorption | NH (1021 cm-2) | 1.52 (1.39–1.69) |
| shock temperature | kT (eV) | 250 (234–269) |
| abundancea | N | 0.052 (0.029–0.073) |
| abundance | O | 0.104 (0.094–0.113) |
| abundance | Ne | 0.17 (0.15–0.19) |
| abundance | Mg | 0.31 (0.25–0.36) |
| abundance | Si | 0.85 (0.54–1.18) |
| abundance | Fe | 0.20 (0.18–0.23) |
| ionisation time scale | τu (1011 s cm-3) | 7.0 (5.0–9.0) |
|
|
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| Model vsedov ( = 1.33 for 574 d.o.f.) |
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| Component | Parameter | Value |
|
|
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| LMC absorption | NH (1021 cm-2) | 1.05 (0.98–1.17) |
| shock/electron temp. | kT (eV) | 168 (164–173) |
| abundance | N | 0.093 (0.057–0.133) |
| abundance | O | 0.20 (0.17–0.23) |
| abundance | Ne | 0.33 (0.28–0.39) |
| abundance | Mg | 0.52 (0.42–0.62) |
| abundance | Si | 0.81 (0.50–1.14) |
| abundance | Fe | 0.39 (0.34–0.44) |
| ionisation time scale | τ (1013 s cm-3) | 2.4 (>1.0) |
Notes.
(a)
Elemental abundances are specified relative to solar (Wilms et al. 2000).
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