Table 5.
Results of the 0.5–7 keV X-ray spectral fits for the CSC2 FXRT candidates.
| FXRT | ID | Model | NH, Gal | NH (z = 0.0) | Γ | kT | logNorm | Flux | C-stat(d.o.f.) | ln𝒵 |
|---|---|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) |
| Nearby extragalactic FXRT Candidates from CSC2 | ||||||||||
| 1 | XRT 000519 | phabs*zphabs*po | 1.0 | 0.3 ± 0.1 | 2.2 ± 0.1 | – | −3.5±0.03 | 90.5 ± 1.8 | 95.3(122) | −63.4 ± 0.02 |
| phabs*zphabs*bremss | 1.0 | 0.1 ± 0.0 | – | 2.6 ± 0.17 | −3.5±0.02 | 84.2 ± 2.2 | 117.0(122) | −77.9 ± 0.02 | ||
| phabs*zphabs*bb | 1.0 | 0.1 ± 0.0 | – | 0.4 ± 0.02 | −5.1±0.01 | 60.9 ± 1.5 | 402.1(122) | −223.2 ± 0.02 | ||
| 2 | XRT 010908 | phabs*zphabs*po | 3.0 | 5.8 ± 3.6 | 2.1 ± 0.6 | – | −5.3±0.3 | 1.0 ± 0.1 | 23.6(15) | −20.4 ± 0.02 |
| phabs*zphabs*bremss | 3.0 | 2.1 ± 1.0 | – | 36.3 ± 26.1 | −5.4±0.1 | 1.2 ± 0.2 | 24.3(15) | −20.4 ± 0.03 | ||
| phabs*zphabs*bb | 3.0 | 1.2 ± 1.0 | – | 0.8 ± 0.1 | −6.8±0.1 | 1.0 ± 0.1 | 29.9(15) | −28.8 ± 0.3 | ||
| 3 | XRT 070530 | phabs*zphabs*po | 5.0 | 2.7 |
5.9 ± 1.6 | – | −5.2 ± 0.4 | 0.2 ± 0.1 | 17.7(6) | −17.4 ± 0.02 |
| phabs*zphabs*bremss | 5.0 | 0.9 |
– | 3.0 |
 |
0.2 ± 0.1 | 20.6(6) | −23.4 ± 0.02 | ||
| phabs*zphabs*bb | 5.0 | 1.7 |
– | 0.2 ± 0.1 | −6.9 ± 0.4 | 0.1 ± 0.1 | 22.0(6) | −25.4 ± 0.1 | ||
| 4 | XRT 071203 | phabs*zphabs*po | 0.6 | 1.0 ± 1.0 | 2.6 ± 0.5 | – | −5.6 ± 0.2 | 0.7 ± 0.1 | 11.8(7) | −15.9 ± 0.02 |
| phabs*zphabs*bremss | 0.6 | 0.4 ± 0.3 | – | 11.8 |
−5.6 ± 0.1 | 1.0 ± 0.2 | 13.6(7) | −18.4 ± 0.02 | ||
| phabs*zphabs*bb | 0.6 | 0.4 ± 0.3 | – | 0.4 ± 0.1 | −7.1 ± 0.1 | 0.6 ± 0.1 | 24.2(7) | −28.1 ± 0.1 | ||
| 5 | XRT 080331 | phabs*zphabs*po | 0.6 | 6.8 ± 1.0 | 3.9 ± 0.4 | – | −4.4 ± 0.2 | 2.0 ± 0.1 | 18.9(30) | −20.1 ± 0.02 |
| phabs*zphabs*bremss | 0.6 | 3.5 ± 1.0 | – | 1.1 ± 0.2 | −4.5 ± 0.2 | 2.0 ± 0.1 | 19.8(30) | −24.1 ± 0.03 | ||
| phabs*zphabs*bb | 0.6 | 0.8 ± 0.6 | – | 0.4 ± 0.03 | −6.5±0.1 | 1.9 ± 0.1 | 23.1(30) | −28.1 ± 0.02 | ||
| 6 | XRT 130822 | phabs*zphabs*po | 0.4 | 8.1 ± 5.3 | 3.6 ± 0.9 | – | −5.0 ± 0.4 | 0.6 ± 0.1 | 6.3(5) | −10.4 ± 0.02 |
| phabs*zphabs*bremss | 0.4 | 2.1 ± 2.0 | – | 3.1 |
−5.5 ± 0.2 | 0.7 ± 0.1 | 5.9(5) | −12.8 ± 0.03 | ||
| phabs*zphabs*bb | 0.4 | 2.7 ± 2.6 | – | 0.5 ± 0.1 | −7.0 ± 0.1 | 0.6 ± 0.1 | 6.0(5) | −15.7 ± 0.2 | ||
| Distant extragalactic FXRT Candidates from CSC2 | ||||||||||
| 7 | XRT 030511 | phabs*zphabs*po | 0.1 | 1.4 ± 0.1 | 2.1 ± 0.2 | – | −4.6 ± 0.1 | 8.9 ± 0.5 | 59.9(61) | −42.1 ± 0.02 |
| phabs*zphabs*bremss | 0.1 | 0.5 ± 0.4 | – | 4.1 ± 1.1 | −4.6 ± 0.1 | 8.9 ± 0.6 | 60.8(61) | −44.3 ± 0.02 | ||
| phabs*zphabs*bb | 0.1 | 0.2±0.2 | – | 0.5 ± 0.04 | −6.1 ± 0.03 | 6.9 ± 0.3 | 95.4(61) | −66.4 ± 0.02 | ||
| 8 | XRT 041230 | phabs*zphabs*po | 0.4 | 9.4 ± 6.4 | 2.7 ± 1.3 | – | −5.6 ± 0.5 | 0.3 ± 0.1 | 1.1(3) | −7.1 ± 0.02 |
| phabs*zphabs*bremss | 0.4 | 3.9 ± 3.0 | – | 39.0 ± 27.7 | −5.9 ± 0.1 | 0.4 ± 0.1 | 1.1(3) | −6.8 ± 0.1 | ||
| phabs*zphabs*bb | 0.4 | 1.8 ± 1.8 | – | 8.0 |
−4.9 ± 2.5 | 0.5 ± 0.2 | 0.9(3) | −11.1 ± 0.02 | ||
| 9 | XRT 080819 | phabs*zphabs*po | 1.4 | 6.0 ± 5.0 | 3.0 ± 1.1 | – | −4.8 ± 0.4 | 1.2 ± 0.2 | 9.1(5) | −12.0 ± 0.02 |
| phabs*zphabs*bremss | 1.4 | 1.7 ± 1.6 | – | 35.2 ± 28.0 | −5.2 ± 0.1 | 2.0 ± 0.3 | 9.2(5) | −12.8 ± 0.02 | ||
| phabs*zphabs*bb | 1.4 | 1.5 |
– | 0.5 ± 0.2 | −6.7 ± 0.1 | 1.1 ± 0.2 | 9.7(5) | −17.8 ± 0.02 | ||
| 10 | XRT 100831 | phabs*zphabs*po | 1.0 | 5.0 ± 3.3 | 3.4 ± 0.9 | – | −5.0 ± 0.3 | 0.8 ± 0.1 | 4.9(7) | −10.3 ± 0.02 |
| phabs*zphabs*bremss | 1.0 | 1.1 ± 1.0 | – | 15.6 |
−5.4 ± 0.1 | 1.3 ± 0.2 | 5.1(7) | −12.4 ± 0.02 | ||
| phabs*zphabs*bb | 1.0 | 0.5 ± 0.4 | – | 53.3 ± 26.3 |
 |
2.0 ± 0.5 | 43.7(7) | −31.3 ± 0.1 | ||
| 11 | XRT 110103 | phabs*zphabs*po | 0.9 | 2.7 ± 1.0 | 2.2 ± 0.2 | – | −4.4±0.1 | 10.4 ± 0.5 | 27.7(40) | −25.8 ± 0.02 |
| phabs*zphabs*bremss | 0.9 | 1.1 ± 0.6 | – | 4.5 ± 1.3 | −4.4 ± 0.1 | 10.6 ± 0.5 | 29.9(40) | −28.0 ± 0.12 | ||
| phabs*zphabs*bb | 0.9 | 0.3 ± 0.2 | – | 0.6 ± 0.03 | −5.9±0.03 | 8.2 ± 0.4 | 56.1(40) | −46.5 ± 0.02 | ||
| 12 | XRT 110919 | phabs*zphabs*po | 0.8 | 1.3 |
2.4 ± 0.5 | – | −5.4 ± 0.1 | 1.0 ± 0.1 | 19.1(14) | −19.7 ± 0.1 |
| phabs*zphabs*bremss | 0.8 | 0.7 ± 0.6 | – | 8.5 |
−5.5 ± 0.1 | 1.2 ± 0.2 | 20.4(14) | −21.4 ± 0.03 | ||
| phabs*zphabs*bb | 0.8 | 1.0 ± 1.0 | – | 0.6 ± 0.1 | −6.9 ± 0.1 | 0.9 ± 0.2 | 28.5(14) | −28.5 ± 0.2 | ||
| 13 | XRT 140327 | phabs*zphabs*po | 0.7 | 6.7 ± 5.0 | 3.7 ± 0.9 | – | −5.0 ± 0.4 | 0.5 ± 0.1 | 20.4(17) | −17.1 ± 0.03 |
| phabs*zphabs*bremss | 0.7 | 1.8 ± 1.5 | – | 14.4 |
−5.5 ± 0.2 | 0.8 ± 0.2 | 20.0(17) | −19.1 ± 0.03 | ||
| phabs*zphabs*bb | 0.7 | 3.7 ± 3.0 | – | 0.4 ± 0.1 | −6.9 ± 0.2 | 0.5 ± 0.1 | 19.5(17) | −22.2±0.105 | ||
| 14 | XRT 141001/ | phabs*zphabs*po | 0.2 | 1.1 ± 0.1 | 1.9 ± 0.3 | – | −5.1 ± 0.1 | 2.8 ± 0.2 | 26.8(17) | −24.6 ± 0.02 |
| CDF-S XT1 | phabs*zphabs*bremss | 0.2 | 0.5 ± 0.4 | – | 10.4 |
−5.1 ± 0.1 | 3.1 ± 0.3 | 27.6(17) | −25.1 ± 0.1 | |
| phabs*zphabs*bb | 0.2 | 0.4 ± 0.3 | – | 0.7 ± 0.1 | −6.5 ± 0.1 | 2.6 ± 0.2 | 41.9(17) | −37.7 ± 0.02 | ||
Notes. Column 1: Number of the candidate.Column 2: Transient ID used in this work. Column 3: Spectral model considered. Columns 4 and 5: Galactic and intrinsic column density absorption (×1021), respectively, in units of cm−2. The former is kept fixed during the fit. Column 6: Photon index from the PL model. Column 7: Temperature in units of keV from the BR or BB models. Column 8: Normalization parameter (in units of photons keV−1 cm−2 s−1). Column 9: Absorbed fluxes (×10−14) in units of erg cm−2 s−1 (0.5–7.0 keV). Column 10: C-stat value and the number of degrees of freedom. Column 11: Log-evidence (ln𝒵) values for each model. Errors are quoted at the 1σ confidence level.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.