Table 2.
Escape fraction of ionizing photons along the line of sight for the three GRBs.
| GRB | zsyst |
 |
fesc, abs (rel) |
 |
|---|---|---|---|---|
| 050908 | 3.3467 |
 (*) |
 (*) |
> 0.07 |
| 060607A | 3.0749 |
 ( ) |
 ( ) |
> 0.05 |
| 191004B | 3.5055 |
 ( ) |
 |
> 0.31 |
Notes. The columns correspond to the name of the GRB; zsyst: the systemic redshift of the host galaxy; 
: the absolute (abs) and relative (rel) escape fraction determined from the estimation of the HI column density, see Sect. 4.1; fesc, abs (rel): the absolute (abs) and relative (rel) lower limit of the escape fraction of ionizing photons. The relative value is given between brackets when a non-zero extinction is considered, otherwise (*) means same value as the absolute one (see Sect. 4.2); 
: the absolute lower limit of the escape fraction of ionizing photons (see Sect. 4.2).
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