Table A.2.
Spectral fit results for eRO-QPE4.
| Epoch | Spectrum | Model | kTdisk |
 |
 |
kTQPE |
 |
 |
ΔlogZ |
|---|---|---|---|---|---|---|---|---|---|
| [eV] | [erg s−1 cm−2] | [erg s−1 cm−2] | [eV] | [erg s−1 cm−2] | [erg s−1 cm−2] | ||||
| eRASS:3 | Full | disk | – | < 3.8 × 10−15 | – | – | – | – | – |
| eRASS4 | Quiescence | disk | – | < 6.9 × 10−14 | – | – | – | – | – |
| QPE | bb | – | – | – |
 |
 |
– | – | |
| XMM burst2 | Quiescence | disk |
 |
(2.8 ± 0.2)×10−13 | – | – | – | – | 91 |
| disk+comp | 43 ± 2 | (3.9 ± 0.4)×10−13 |
 |
– | – | – | 0 | ||
| QPE rise1 | Q+bb | ∼43 | ∼3.9 × 10−13 | ∼1.4 × 10−14 |
 |
 |
– | – | |
| QPE rise2 | Q+bb | ∼43 | ∼3.9 × 10−13 | ∼1.4 × 10−14 |
 |
(1.5 ± 0.1)×10−12 | – | 0 | |
| Q+bb+comp | ∼43 | ∼3.9 × 10−13 | ∼1.4 × 10−14 |
 |
(1.5 ± 0.1)×10−12 | < 1.3 × 10−13 | 2 | ||
| QPE peak | Q+bb | ∼43 | ∼3.9 × 10−13 | ∼1.4 × 10−14 |
 |
(2.9 ± 0.1)×10−12 | – | 0 | |
| Q+bb+comp | ∼43 | ∼3.9 × 10−13 | ∼1.4 × 10−14 | 123 ± 2 | (2.9 ± 0.1)×10−12 |
 |
0.5 | ||
| QPE decay1 | Q+bb | ∼43 | ∼3.9 × 10−13 | ∼1.4 × 10−14 | 89 ± 2 | (2.1 ± 0.1)×10−12 | – | – | |
| QPE decay2 | Q+bb | ∼43 | ∼3.9 × 10−13 | ∼1.4 × 10−14 | 71 ± 5 |
 |
– | – | |
See notes in Table A.1. For XMM-Newton, the different phases are shown in Fig. 10 and the bottom panel of A.9. Here, the quiescence spectrum ("Q") is held fixed during the QPE epochs by letting its parameters free to vary only within the 10th-90th percentiles of the posteriors of the quiescence fit alone (hence the "∼"). Given the spectroscopic redshift and the cosmology adopted (Hinshaw et al. 2013), the conversion for related luminosity values for eRO-QPE4 is 4.42 × 1054 cm2 in this paper.
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