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Table 5
Spectroscopic GRB sample.
| GRB | AV | log NH i | NH,X | NH ,X/AV |
| mag | cm-2 | 1022 cm-2 | 1022 cm-2 mag-1 | |
|
|
||||
| 050401 | 0.65 ± 0.04 | 22.60 ± 0.30 |
|
|
| 050730 | 0.12 ± 0.02 | 22.10 ± 0.10 | <0.70 | <5.83 |
| 050824 | 0.15 ± 0.03 | ... | <0.20 | <1.33 |
| 060115 | 0.10 ± 0.02 | 21.50 ± 0.10 | <0.84 | <8.40 |
| 060512 | <0.12 | ... | <0.07 | ... |
| 060614 | 0.11 ± 0.03 | ... | <0.05 | <0.45 |
| 060707 | 0.08 ± 0.02 | 21.00 ± 0.20 | <1.03 | <12.9 |
| 060708 | 0.14 ± 0.02 | ... | <0.46 | <3.29 |
| 060714 | 0.21 ± 0.02 | 21.80 ± 0.10 |
|
|
| 060729 | 0.07 ± 0.02 | ... | 0.13 ± 0.02 | 1.89 ± 0.61 |
| 060904B | 0.34 ± 0.03 | ... | 0.47 ± 0.04 | 1.38 ± 0.17 |
| 060906 | <0.09 | 21.85 ± 0.10 | <5.3 | ... |
| 060926 | 0.32 ± 0.02 | 22.70 ± 0.10 | <8.00 | <25.0 |
| 060927 | <0.12 | 22.50 ± 0.15 | <5.7 | ... |
| 061007 | 0.34 ± 0.03 | ... | 0.45 ± 0.03 | 1.29 ± 0.14 |
| 061021 | <0.10 | ... |
|
>0.70 |
| 061110A | <0.10 | ... | <0.03 | ... |
| 061110B | 0.23 ± 0.03 | 22.35 ± 0.10 | <8.40 | <36.52 |
| 070110 | <0.10 | 21.70 ± 0.10 | <0.34 | ... |
| 070125 | 0.30 ± 0.04 | ... |
|
|
| 070129 | 0.28 ± 0.02 | ... |
|
|
| 070318 | ... | ... | 0.45 ± 0.05 | ... |
| 070506 | 0.44 ± 0.05 | 22.00 ± 0.30 | <1.26 | <2.86 |
| 070611 | 0.06 ± 0.02 | 21.30 ± 0.20 | <0.94 | <15.7 |
| 070721B | 0.20 ± 0.02 | 21.50 ± 0.20 | <1.57 | <7.85 |
| 070802 | 1.19 ± 0.15 | 21.50 ± 0.20 | <2.90 | <2.44 |
| 071020 | 0.43 ± 0.04 | <20.30 | 0.46 ± 0.02 | 1.07 ± 0.11 |
| 071031 | <0.07 | 22.15 ± 0.05 | <1.20 | ... |
| 071112C | <0.08 | ... | <0.16 | ... |
| 071117 | 0.28 ± 0.02 | ... |
|
|
| 080210 | 0.33 ± 0.03 | 21.90 ± 0.10 |
|
|
| 080319B | <0.11 | ... | 0.12 ± 0.01 | >1.10 |
| 080520 | 0.22 ± 0.02 | ... |
|
|
| 080605 |
|
... | 0.71 ± 0.08 | 0.59 ± 0.08 |
| 080707 | <0.12 | ... | 0.38 ± 0.19 | >3.17 |
| 080721 | <0.12 | 21.60 ± 0.10 | 0.86 ± 0.02 | >7.17 |
| 080805 | 1.53 ± 0.13 | ... |
|
|
| 080905B | 0.42 ± 0.03 | <22.15 |
|
|
| 080913 | 0.12 ± 0.03 | <21.14 | <9.30 | <77.5 |
| 080916A | 0.15 ± 0.04 | ... | 0.68 ± 0.07 | 4.53 ± 1.29 |
| 080928 | 0.29 ± 0.03 | ... |
|
|
| 080607a |
|
22.70 ± 0.15 |
|
|
Notes. Columns: name, Galactic column density, neutral hydrogen column density when available from the literature, equivalent column density (NH ,X) determined from the X-ray spectral fits and the NH,X/AV ratio. We reported 2σ upper limits for NH ,X where detection is < 2σ significant.
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