Table 3
Parameters of the spectral fits to the dust scattering rings in eRASS1 and eRASS2.
| Param. | Units | Model1 | Model2 | Model3 |
|---|---|---|---|---|
| eRASS1 | ||||
| NH | 1021 cm−2 |  |
8.6 |  |
| γ |  |
 |
4.0 | |
| Norm | 10−3 ph keV−1 cm−2 |  |
 |
 |
 |
1.0 (284) | 1.0 (285) | 1.0 (285) | |
| eRASS1 + eRASS2 | ||||
| NH | 1021 cm−2 |  |
8.6 |  |
| γ |  |
 |
4.0 | |
| Norm1 | 10−3 ph keV−1 cm−2 |  |
 |
 |
| Norm2 | 10−3 ph keV−1 cm−2 |  |
 |
 |
 |
1.0 (570) | 1.0 (571) | 1.0 (571) | |
Notes. Model const*tbabs(powerlaw), abundance=wilm in Xspec. Model 1: NH and power-law parameters allowed to vary. Model 2: NH fixed to 8.6 × 1021 cm−2. Model 3: power-law index fixed to 4.0. For the eRASS1 + eRASS2 fits, both spectra were fitted simultaneously with NH and γ tied between the spectra and norm1 and norm2 left to vary independently. All parameter errors correspond to 90% confidence limits for 1 parameter.
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