Table 3.
Radio SED fit results using the ∼90 day data, left, and ∼138 day data, right, with Eq. (1).
| t ∼ 90 days | ||
|---|---|---|
| Parameter | Unit | Value |
| νpk | GHz | 3.6 ± 0.2 |
| Lν, pk | erg s−1 Hz−1 | (3.6 ± 0.3) × 1029 |
| β1 | – | 4 ± 1 |
| β2 | – | –0.6 ± 0.1 |
| Rp | 1017 cm | 1.3 ± 0.1 |
| v/c = Γβ | – | 0.72 ± 0.03 |
| Ṁ/vw | 10−4 M⊙ yr−1 / 1000 km s−1 | 0.08±0.01 |
| ne | cm−3 | 20 ± 2 |
| B | G | 0.24±0.02 |
| U | 1049 erg | 2.2 |
| Rp | 1017 cm | 1.2 ± 0.1 |
| v/c = Γβ | – | 0.63 ± 0.03 |
| Ṁ/vw | 10−4 M⊙ yr−1 / 1000 km s−1 | 0.94±0.02 |
| ne | cm−3 | (3.2 )×102 |
| B | G | 0.15±0.01 |
| U | 1049 erg | 19 ± 2 |
| t ∼ 138 days | ||
| Parameter | Unit | Value |
| νpk | GHz | 5.0 ± 0.7 |
| Lν, pk | erg s−1 Hz−1 | (6.0 ± 0.9) × 1029 |
| β1 | – | 2.8 ± 0.8 |
| β2 | – | –0.6 ± 0.2 |
| Rp | 1017 cm | 1.2 ± 0.1 |
| v/c = Γβ | – | 0.42 ± 0.03 |
| Ṁ/vw | 10−4 M⊙ yr−1 / 1000 km s−1 | 0.32 ± 0.01 |
| ne | cm−3 | (1.0 ± 0.2) × 102 |
| B | G | 0.31 ± 0.01 |
| U | 1049 erg | 2.9 ± 0.5 |
| Rp | 1017 cm | 1.1 ± 0.1 |
| v/c = Γβ | – | 0.37 ± 0.03 |
| Ṁ/vw | 10−4 M⊙ yr−1 / 1000 km s−1 | 4.0 ± 0.1 |
| ne | cm−3 | (1.6 ) × 103 |
| B | G | 0.19 ± 0.03 |
| U | 1049 erg | 25 |
Notes. Above the single solid lines we list the broken power-law fit parameters. Below, we list the inferred event properties at each epoch under the synchrotron blast-wave model as described in Sect. 4.4, assuming equipartition (ϵe = ϵB = 1/3). The uncertainties on the event properties (provided at 1σ) are statistical only, and are underestimated due to the presence of systematic errors arising from fixed values of f, ϵe and ϵB. We also allowed s to vary between 0 and 1, with s = 1 providing the best-fit in each case. The (rest-frame) fit parameters νpk and Lν, pk are defined at the intersection point of the two power laws (Chevalier 1998). Below the double lines we give parameter values calculated with ϵe = 0.1 and ϵB = 0.01 (note that only the results with ϵe = ϵB = 1/3 are plotted in the relevant figures).
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