Table A.1
Radio continuum spectral parameters for the SNR sample used in this work.
| SNR | α | ν0 [MHz] | τ0 | ν1 [MHz] | S 1 [Jy] | ν∗ [MHz] | S ∗ [Jy] |
|---|---|---|---|---|---|---|---|
| G18.8+0.3 (Kes 67) | −0.373 | 74 | 0.043 | 74 | 79.75 | 16.54 | 139.46 |
| G21.8−0.6 (Kes 69) | −0.505 | 74 | 0.088 | 74 | 208.00 | 23.26 | 373.16 |
| G23.3−0.3 (W41) | −0.628 | 74 | 1.214 | 74 | 347.20 | 81.16 | 327.62 |
| G27.4+0.0 (Kes 73) | −0.690 | 74 | 0.878 | 74 | 34.72 | 69.55 | 36.24 |
| G29.7−0.3 (Kes 75) | −0.659 | 74 | 0.176 | 74 | 50.87 | 32.36 | 87.74 |
| G31.9+0.0 (3C 391) | −0.521 | 74 | 1.210 | 74 | 90.70 | 81.03 | 86.51 |
| G39.2−0.3 (3C 396) | −0.351 | 74 | 0.063 | 74 | 41.65 | 19.84 | 66.11 |
| G41.1−0.3 (3C 397) | −0.356 | 74 | 0.141 | 74 | 75.30 | 29.11 | 104.96 |
| G43.3−0.2 (W49B) | −0.461 | 74 | 0.580 | 74 | 111.80 | 57.09 | 125.96 |
| G189.1+3.0 (IC 443) | −0.388 | 74 | 0.016 | 74 | 436.90 | 10.24 | 941.26 |
| G290.1−0.8 (MSH 11−61A) | −0.421 | 74 | 0.258 | 74 | 137.80 | 38.82 | 180.80 |
| G316.3+0.0 | −0.893 | 74 | 0.215 | 74 | 166.20 | 35.59 | 319.52 |
| G0.9+0.1 | −0.64 | 100 | 0.820 | 2000 | 6.9 | 90.98 | 49.86 |
| G1.05−0.1 | −0.66 | 100 | 2.000 | 1700 | 13.0 | 139.10 | 67.83 |
| G6.4−0.1 (W28) | −0.42 | 100 | 0.080 | 450 | 440.0 | 30.04 | 1371.00 |
| G8.7−0.1 (W30) | −0.48 | 100 | 0.150 | 940 | 80.0 | 40.52 | 361.80 |
| G9.8+0.6 | −0.56 | 100 | 0.670 | 740 | 4.1 | 82.64 | 13.99 |
| G11.2−0.3 | −0.49 | 100 | 0.240 | 6000 | 9.2 | 50.68 | 95.43 |
| G11.4−0.1 | −0.46 | 100 | 0.430 | 1000 | 6.0 | 66.91 | 20.82 |
| G15.9+0.2 | −0.63 | 100 | 0.160 | 1100 | 4.2 | 41.78 | 32.97 |
| G16.7+0.1 | −0.53 | 100 | 0.530 | 960 | 2.9 | 73.91 | 11.29 |
| G18.8+0.3 (Kes 67) | −0.42 | 100 | 0.030 | 580 | 37.0 | 18.83 | 156.10 |
| G20.0−0.2 | −0.00 | 100 | 0.05 | 180 | 10.0 | 24.01 | 10.00 |
| G21.8−0.6 (Kes 69) | −0.50 | 100 | 0.050 | 600 | 77.0 | 24.01 | 384.90 |
| G22.7−0.2 | −0.40 | 100 | 0.560 | 1850 | 59.0 | 75.87 | 211.70 |
| G23.3−0.3 (W41) | −0.48 | 100 | 0.550 | 190 | 190.0 | 75.23 | 296.40 |
| G24.7−0.6 | −0.59 | 100 | 0.760 | 800 | 8.0 | 87.75 | 29.47 |
| G24.7+0.6 | −0.14 | 100 | 0.220 | 1600 | 18.0 | 48.63 | 29.36 |
| G27.4+0.0 | −0.71 | 100 | 0.380 | 560 | 9.4 | 63.08 | 44.30 |
| G29.7−0.3 (Kes 75) | −0.59 | 100 | 0.060 | 3100 | 4.4 | 26.19 | 73.56 |
| G31.9+0.0 (3C 391) | −0.51 | 100 | 0.520 | 2200 | 15.5 | 73.24 | 87.89 |
| G39.2−0.3 (3C 396) | −0.48 | 100 | 0.060 | 840 | 20.0 | 26.19 | 105.70 |
| G39.7−2.0 (W50) | −0.50 | 100 | 0.055 | 760 | 90.0 | 25.13 | 495.00 |
| G40.5−0.5 | −0.51 | 100 | 0.220 | 410 | 19.5 | 48.63 | 57.84 |
| G41.1−0.3 (3C 397) | −0.46 | 100 | 0.070 | 10000 | 7.0 | 28.19 | 104.30 |
| G78.2+2.1 (γ-Cygni) | −0.73 | 100 | 0.280 | 1480 | 40.0 | 54.54 | 2671.00 |
| G82.2+5.3 (W63) | −0.63 | 100 | 0.270 | 1900 | 73.0 | 53.61 | 691.10 |
| G89.0+4.7 (HB21) | −0.39 | 100 | 0.012 | 800 | 240.0 | 12.17 | 1228.00 |
| G111.7−2.1 | −0.75 | 100 | 0.010 | 180 | 11500.0 | 10.94 | 93922.52 |
| G120.1+1.4 | −0.62 | 100 | 0.010 | 520 | 86.0 | 11.16 | 930.89 |
| G189.1.1−3.0 | −0.42 | 100 | 0.010 | 700 | 190.0 | 11.16 | 1080.67 |
| G205.5+0.5 (Monoceros) | −0.47 | 100 | 0.080 | 1300 | 135.0 | 30.04 | 793.20 |
| G206.9+2.3 (PKS 0646+06) | −0.51 | 100 | 0.060 | 360 | 10.0 | 26.19 | 38.06 |
| G6.4−0.1 (W28) | −0.4 | 30.9 | 0.9 | 408 | 424.0 | 29.39 | 1214.00 |
| G11.2−0.3 | −0.5 | 30.9 | 2.1 | 408 | 30.0 | 43.99 | 91.36 |
| G11.4−0.1 | −0.4 | 30.9 | 3.7 | 408 | 7.1 | 57.61 | 15.53 |
| G15.9+0.2 | −0.7 | 30.9 | 2.1 | 408 | 8.5 | 43.99 | 40.41 |
| G18.8+0.3 (Kes 67) | −0.5 | 30.9 | 0.6 | 408 | 49.0 | 24.23 | 201.10 |
| G21.8−0.6 (Kes 69) | −0.5 | 30.9 | 0.9 | 408 | 95.0 | 29.39 | 354.00 |
| G22.7−0.2 | −0.2 | 30.9 | 3.5 | 408 | 65.0 | 56.11 | 96.66 |
| G23.3−0.3 (W41) | −0.4 | 30.9 | 7.2 | 408 | 119.0 | 79.11 | 229.40 |
| G29.7−0.3 (Kes 75) | −0.6 | 30.9 | 0.8 | 408 | 15.0 | 27.79 | 75.20 |
| G39.2−0.3 (3C 396) | −0.4 | 30.9 | 0.5 | 408 | 25.0 | 22.21 | 80.09 |
| G40.5−0.5 | −0.5 | 30.9 | 2.1 | 408 | 16.0 | 43.99 | 48.73 |
| G41.1−0.3 (3C 397) | −0.4 | 30.9 | 0.9 | 408 | 39.0 | 29.39 | 111.70 |
| G43.3−0.2 (W49) | −0.4 | 30.9 | 0.9 | 408 | 46.0 | 29.39 | 131.80 |
| G355.9−2.5 | −0.5 | 30.9 | 1.1 | 408 | 12.0 | 32.33 | 42.63 |
Notes. Each group of rows, separated by a horizontal line, corresponds to Castelletti et al. (2021) and this work data, Kovalenko et al. (1994b), and Kassim (1989) sample, respectively. Column 1 is the SNR identification name while columns 2 to 6 are published parameter for Eq. (1) taken from these references. For SNRs G189.1+3.0, G290.1–0.8, and G316.3+0.0, we derived the parameters through spectral fits to the datasets constructed for this study. Column 7 and 8 display our computed values for v* and S*, respectively, using 
and S* = S1(ν*/ν1)α (see Eq. 2).
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