Table 3.
Open in new tab

Results of spectral fitting. The models are a power law (labelled PL) and a power law attenuated by an ionized absorber, with the power-law index fixed at αX = 0.98 (labelled PL × IA). In both cases, a photoelectric absorber with a fixed column density was included to represent Galactic absorption. P is the null hypothesis probability corresponding to χ2/ν. An asterisk is used to indicate parameter uncertainties for which the limits of the fitting range were reached before Δχ2 = 1.

XWAS J005007XWAS J005044XWAS J015239XWAS J015257XWAS J022645XWAS J050754
PL
αX0.12 ± 0.100.14 ± 0.140.47 ± 0.08−0.45 ± 0.200.39 ± 0.180.40 ± 0.09
χ2/ν26.4/119.6/837.9/238.9/44.4/322.5/12
P0.00570.290.0260.0640.220.032
PL × IA
log ξ|$2.8^{+0.3}_{-0.5}$||$2.6^{+0.4}_{-2.6*}$||$0.0^{+2.5}_{-0.0*}$||$2.6^{+0.6}_{-2.6*}$||$1.1^{+2.7}_{-1.1*}$||$2.8^{+0.4}_{-2.8*}$|
log NH|$23.6^{+0.3}_{-0.3}$||$23.3^{+0.4}_{-0.5}$||$22.5^{+0.5}_{-0.1}$||$23.9^{+0.4}_{-0.6}$||$22.7^{+0.6}_{-0.3}$||$23.4^{+0.4}_{-0.6}$|
χ2/ν8.8/106.9/721.7/221.0/33.3/29.3/11
P0.560.430.480.310.190.60
XWAS J005007XWAS J005044XWAS J015239XWAS J015257XWAS J022645XWAS J050754
PL
αX0.12 ± 0.100.14 ± 0.140.47 ± 0.08−0.45 ± 0.200.39 ± 0.180.40 ± 0.09
χ2/ν26.4/119.6/837.9/238.9/44.4/322.5/12
P0.00570.290.0260.0640.220.032
PL × IA
log ξ|$2.8^{+0.3}_{-0.5}$||$2.6^{+0.4}_{-2.6*}$||$0.0^{+2.5}_{-0.0*}$||$2.6^{+0.6}_{-2.6*}$||$1.1^{+2.7}_{-1.1*}$||$2.8^{+0.4}_{-2.8*}$|
log NH|$23.6^{+0.3}_{-0.3}$||$23.3^{+0.4}_{-0.5}$||$22.5^{+0.5}_{-0.1}$||$23.9^{+0.4}_{-0.6}$||$22.7^{+0.6}_{-0.3}$||$23.4^{+0.4}_{-0.6}$|
χ2/ν8.8/106.9/721.7/221.0/33.3/29.3/11
P0.560.430.480.310.190.60
Table 3.
Open in new tab

Results of spectral fitting. The models are a power law (labelled PL) and a power law attenuated by an ionized absorber, with the power-law index fixed at αX = 0.98 (labelled PL × IA). In both cases, a photoelectric absorber with a fixed column density was included to represent Galactic absorption. P is the null hypothesis probability corresponding to χ2/ν. An asterisk is used to indicate parameter uncertainties for which the limits of the fitting range were reached before Δχ2 = 1.

XWAS J005007XWAS J005044XWAS J015239XWAS J015257XWAS J022645XWAS J050754
PL
αX0.12 ± 0.100.14 ± 0.140.47 ± 0.08−0.45 ± 0.200.39 ± 0.180.40 ± 0.09
χ2/ν26.4/119.6/837.9/238.9/44.4/322.5/12
P0.00570.290.0260.0640.220.032
PL × IA
log ξ|$2.8^{+0.3}_{-0.5}$||$2.6^{+0.4}_{-2.6*}$||$0.0^{+2.5}_{-0.0*}$||$2.6^{+0.6}_{-2.6*}$||$1.1^{+2.7}_{-1.1*}$||$2.8^{+0.4}_{-2.8*}$|
log NH|$23.6^{+0.3}_{-0.3}$||$23.3^{+0.4}_{-0.5}$||$22.5^{+0.5}_{-0.1}$||$23.9^{+0.4}_{-0.6}$||$22.7^{+0.6}_{-0.3}$||$23.4^{+0.4}_{-0.6}$|
χ2/ν8.8/106.9/721.7/221.0/33.3/29.3/11
P0.560.430.480.310.190.60
XWAS J005007XWAS J005044XWAS J015239XWAS J015257XWAS J022645XWAS J050754
PL
αX0.12 ± 0.100.14 ± 0.140.47 ± 0.08−0.45 ± 0.200.39 ± 0.180.40 ± 0.09
χ2/ν26.4/119.6/837.9/238.9/44.4/322.5/12
P0.00570.290.0260.0640.220.032
PL × IA
log ξ|$2.8^{+0.3}_{-0.5}$||$2.6^{+0.4}_{-2.6*}$||$0.0^{+2.5}_{-0.0*}$||$2.6^{+0.6}_{-2.6*}$||$1.1^{+2.7}_{-1.1*}$||$2.8^{+0.4}_{-2.8*}$|
log NH|$23.6^{+0.3}_{-0.3}$||$23.3^{+0.4}_{-0.5}$||$22.5^{+0.5}_{-0.1}$||$23.9^{+0.4}_{-0.6}$||$22.7^{+0.6}_{-0.3}$||$23.4^{+0.4}_{-0.6}$|
χ2/ν8.8/106.9/721.7/221.0/33.3/29.3/11
P0.560.430.480.310.190.60
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