Table 2.
Parameters of linear and parabolic best fit for sources.
| Short name | Slope αν | Parabola peak | χl | χp | Fp-value | Preferred model |
|---|---|---|---|---|---|---|
| J0000-0541 | −0.94±0.04 | (681±533) kHz | 169.09 | 38.70 | 1.27×10−2 | Log parabola |
| J0022-1039 | −0.88±0.07 | * | 2163.65 | − | − | Power law |
| J0203-1247 | −0.35±0.05 | * | 42.93 | − | − | Power law |
| J0212-0201 | −0.68±0.06 | − | 0.81 | − | − | Power law |
| J0213-0551 | −0.47±0.04 | − | 0.41 | − | − | Power law |
| J0230-0859 | −0.75±0.03 | * | 100.07 | − | − | Power law |
| J0239-1118 | +0.28±0.04 | − | 45.03 | − | − | Power law |
| J0400-2500 | −0.91±0.10 | (250±183) MHz | 1003.23 | 528.83 | 1.27×10−1 | Power law |
| J0413-0050 | Not enough points | |||||
| J0422-1854 | −0.87±0.05 | (18±17) MHz | 472.39 | 173.13 | 2.10×10−2 | Log parabola |
| J0436-1022 | −0.77±0.04 | * | 15303.97 | − | − | Power law |
| J0447-0508 | −0.75±0.06 | (304±105) MHz | 1496.13 | 161.35 | 5.19×10−4 | Log parabola |
| J0452-2953 | −1.05±0.10 | * | 1657.67 | − | − | Power law |
| J0549-2425 | −0.80±0.03 | (707±576) KHz | 235.97 | 25.21 | 6.27×10−4 | Log parabola |
| J0622-2317 | −1.29±0.13 | − | 55.83 | − | − | Power law |
| J0820-1741 | −0.84±0.13 | − | 16.64 | − | − | Power law |
| J0842-0349 | −0.79±0.04 | − | 0.36 | − | − | Power law |
| J0846-1214 | −0.90±0.02 | (3.16±2.24) Hz | 18362.57 | 7549.26 | 7.21×10−2 | Power law |
| J0849-2351 | −0.81±0.05 | * | 56.06 | − | − | Power law |
| J0850-0318 | −0.74±0.09 | * | 495.52 | − | − | Power law |
| J1032-2707 | −0.94±0.07 | * | 623.56 | − | − | Power law |
| J1044-1826 | −0.82±0.02 | * | 56.83 | − | − | Power law |
| J1147-2145 | −0.87±0.05 | (6.97±2.53) MHz | 185.45 | 58.96 | 7.71×10−2 | Power law |
| J2021-2235 | −0.88±0.07 | * | 2163.65 | − | − | Power law |
| J2244-1822 | Not enough points | |||||
| J2358-1029 | Not enough points |
Notes. Columns: (1) Source name; (2) slope of the linear fit, that is spectral index αν; (3) peak of the parabolic fit. The “*” symbol indicates that the log parabola coefficients are consistent with a power law, the “–” indicates that the fit did not converge due to too few points; (4) chi-squared of the linear fit; (5) chi-squared of the parabolic fit; (6) p-value of the F test, (7) preferred model based on F test. We fix the threshold at p-value < 5 × 10−2.
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