Skip banner and navigation tools.

 |  site map

Swift-XRT spectra of GRB 091208B

Last updated after receiving ObsID 00378559013, version 9

Data were analysed using HEASOFT version 6.29

About these products.

Get another burst.

Add time-sliced spectrum.

The spectral fits assume a redshift: 1.063 (GCN 10263)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 118 to 46280 s)

Download spectral files for Time-averaged spectrum.

Plots to download

WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+124 s

NH (Galactic)5.75 × 1020 cm-2
NH (intrinsic)9.9 (+22.5, -9.8) × 1021 cm-2
z of absorber1.063
Photon index2.0 (+0.8, -0.6)
Flux (0.3-10 keV)
(Observed)
1.7 (+0.8, -0.6) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.35 (+1.55, -0.67) × 10-10 erg cm-2 s-1
Counts to flux (obs)2.93 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.16 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
33.40 (48)
Spectrum exposure11 s

PC mode. Mean photon arrival: T0+9257 s

NH (Galactic)5.75 × 1020 cm-2
NH (intrinsic)1.13 (+0.28, -0.25) × 1022 cm-2
z of absorber1.063
Photon index1.93 (+0.13, -0.12)
Flux (0.3-10 keV)
(Observed)
7.6 (+0.6, -0.6) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.06 (+0.07, -0.06) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.77 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.24 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
338.56 (377)
Spectrum exposure9.5 ks

[Back to top]

Late Time spectrum (T0 + 5310 to 46280 s)

Download spectral files for Late Time spectrum.

Plots to download

PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+14308 s

NH (Galactic)5.75 × 1020 cm-2
NH (intrinsic)1.1 (+0.3, -0.3) × 1022 cm-2
z of absorber1.063
Photon index1.85 (+0.16, -0.15)
Flux (0.3-10 keV)
(Observed)
4.3 (+0.4, -0.4) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.7 (+0.5, -0.4) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.94 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.26 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
267.29 (315)
Spectrum exposure9.0 ks

[Back to top]