Table 2
Results of GRB 080928 optical afterglow polarimetric observations.
| t − t0 (days) | MODE | Q/I | U/I | P (%) | θ (°) |
|---|---|---|---|---|---|
| 0.62 | IPOL | −0.0049 ± 0.0050 | −0.0008 ± 0.0045 | <1.99 | − |
| 0.66 | PMOS | 0.0031 ± 0.0034 | 0.0037 ± 0.0038 | <1.57 | − |
| 1.70 | IPOL | 0.0059 ± 0.0101 | 0.0457 ± 0.0104 |  |
41.3 ± 6.3 |
Notes. Summary of the results in both imaging and spectro-polarimetry mode. The latter were obtained by integrating the spectrum over the V-band. Errors on the reduced Stokes parameters and the position angle were computed via propagation theory; those on P were obtained after bias correction when appropriate (see text). Uncertainties are at 1σ, while upper limits are at 3σ.
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