Skip banner and navigation tools.

 |  site map

Swift-XRT spectra of GRB 081222

Last updated after receiving ObsID 00337914009, version 14

Data were analysed using HEASOFT version 6.32

About these products.

Get another burst.

Add time-sliced spectrum.

The spectral fits assume a redshift: 2.77 (GCN 8713)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 58 to 48188 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+329 s

NH (Galactic)2.37 × 1020 cm-2
NH (intrinsic)4.5 (+1.6, -1.6) × 1021 cm-2
z of absorber2.77
Photon index1.92 (+0.04, -0.04)
Flux (0.3-10 keV)
(Observed)
4.71 (+0.11, -0.11) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.20 (+0.10, -0.10) × 10-10 erg cm-2 s-1
Counts to flux (obs)3.30 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.64 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
572.65 (666)
Spectrum exposure837 s

PC mode. Mean photon arrival: T0+10958 s

NH (Galactic)2.37 × 1020 cm-2
NH (intrinsic)5 (+3, -3) × 1021 cm-2
z of absorber2.77
Photon index1.89 (+0.07, -0.07)
Flux (0.3-10 keV)
(Observed)
1.37 (+0.06, -0.06) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.52 (+0.06, -0.06) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.39 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.75 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
452.23 (491)
Spectrum exposure14.0 ks

[Back to top]

Late Time spectrum (T0 + 5131 to 48188 s)

Download spectral files for Late Time spectrum.

Plots to download

PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+16113 s

NH (Galactic)2.37 × 1020 cm-2
NH (intrinsic)6 (+4, -4) × 1021 cm-2
z of absorber2.77
Photon index1.93 (+0.09, -0.08)
Flux (0.3-10 keV)
(Observed)
8.1 (+0.5, -0.4) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
9.0 (+0.4, -0.4) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.32 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.71 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
417.05 (421)
Spectrum exposure13.0 ks

[Back to top]