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Table A.1.

RX J1301.9+2747: EPIC-pn spectral analysis results.

Model 1: tbabs*(pow + diskbb): χ2/ν = 227/198
NH <  3 × 1019 cm−2
Spectrum kTdisk
[erg cm s−1] [eV] [erg cm s−1]
2000 low
2000 high 103 ± 2
2019 low 3.1 ± 0.4 × 10−14
2019 high

Model 2: tbabs*(pow + diskbb + bbody): χ2/ν = 295/200
NH <  2 × 1019 cm−2
Spectrum kTdisk kTbb
[erg cm s−1] [eV] [erg cm s−1] [eV] [erg cm s−1]
2000 low 1.0 ± 0.4 × 10−14 57 ± 1
2000 high 103 ± 4 6.9 ± 0.4 × 10−13
2019 low
2019 high 125 ± 2

Model 3: tbabs*(pow + diskbb + brems): χ2/ν = 217/200
NH = 1.7 ± 0.9 × 1020 cm−2
Spectrum kTdisk kTbre
[erg cm s−1] [eV] [erg cm s−1] [eV] [erg cm s−1] [erg cm s−1]
2000 low 9.5 ± 4.5 × 10−15
2000 high 222 ± 17
2019 low 54 ± 4
2019 high 302 ± 17

Model 4a: tbabs*(pow + diskbb + nthcomp): χ2/ν = 209/198
NH = 4 ± 1 × 1020 cm−2 cm−2
Spectrum kTdisk kTnth Γnth
[erg cm s−1] [eV] [erg cm s−1] [eV] [erg cm s−1] [erg cm s−1]
2000 low 9.7 ± 4.3 × 10−15
2000 high > 250 7.8 ± 0.9 × 10−13
2019 low 48 ± 4
2019 high 2.9 ± 0.3

Model 4b: tbabs*(pow + diskbb + comptt): χ2/ν = 210/198
NH = 4 ± 1 × 1020 cm−2 cm−2
Spectrum kTdisk kTcom τcom
[erg cm s−1] [eV] [erg cm s−1] [eV] [erg cm s−1] [erg cm s−1]
2000 low 1.0 ± 0.4 × 10−14
2000 high 7 ± 4
2019 low
2019 high

Notes. The fluxes are observed erg cm−2 s−1. Errors are quoted at 1σ confidence level.

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