Upper and lower limits for the free parameters in the IGM models. Continuum parameters were also free parameters. The fixed parameters are Galactic log(|${\it N}\small {\rm HX}$|), the IGM slab at half the GRB redshift, and any known intervening object log(|${\it N}\small {\rm HX}$|).
| IGM parameter . | range in xspec models . |
|---|---|
| Column density | 19 ≤ log(|${\it N}\small {\rm HX}$|) ≤23 |
| Temperature | 4 ≤ log(T/K) ≤8 |
| Metallicity | −4 ≤ [X/H] ≤ −0.7 |
| IGM parameter . | range in xspec models . |
|---|---|
| Column density | 19 ≤ log(|${\it N}\small {\rm HX}$|) ≤23 |
| Temperature | 4 ≤ log(T/K) ≤8 |
| Metallicity | −4 ≤ [X/H] ≤ −0.7 |
Upper and lower limits for the free parameters in the IGM models. Continuum parameters were also free parameters. The fixed parameters are Galactic log(|${\it N}\small {\rm HX}$|), the IGM slab at half the GRB redshift, and any known intervening object log(|${\it N}\small {\rm HX}$|).
| IGM parameter . | range in xspec models . |
|---|---|
| Column density | 19 ≤ log(|${\it N}\small {\rm HX}$|) ≤23 |
| Temperature | 4 ≤ log(T/K) ≤8 |
| Metallicity | −4 ≤ [X/H] ≤ −0.7 |
| IGM parameter . | range in xspec models . |
|---|---|
| Column density | 19 ≤ log(|${\it N}\small {\rm HX}$|) ≤23 |
| Temperature | 4 ≤ log(T/K) ≤8 |
| Metallicity | −4 ≤ [X/H] ≤ −0.7 |
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