Skip banner and navigation tools.

 |  site map

Swift-XRT spectra of GRB 130427A

Last updated after receiving ObsID 00554620162, version 11

Data were analysed using HEASOFT version 6.29

About these products.

Get another burst.

Add time-sliced spectrum.

The spectral fits assume a redshift: 0.34 (GCN 14455)

Non-standard pipeline processing was used to produce these data. The pointing accuracy requirements for the first snapshot has been removed, and the UVOT-derived attitude file used.

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 143 to 59810 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+1196 s

NH (Galactic)1.91 × 1020 cm-2
NH (intrinsic)2.7 (+0.8, -0.8) × 1020 cm-2
z of absorber0.34
Photon index1.495 (+0.016, -0.016)
Flux (0.3-10 keV)
(Observed)
7.91 (+0.09, -0.09) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
8.23 (+0.08, -0.08) × 10-9 erg cm-2 s-1
Counts to flux (obs)4.14 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.31 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
1357.90 (890)
Spectrum exposure1.9 ks

PC mode. Mean photon arrival: T0+44907 s

NH (Galactic)1.91 × 1020 cm-2
NH (intrinsic)1.1 (+0.4, -0.4) × 1021 cm-2
z of absorber0.34
Photon index1.69 (+0.08, -0.08)
Flux (0.3-10 keV)
(Observed)
7.9 (+0.4, -0.4) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
8.8 (+0.4, -0.4) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.92 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.38 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
454.04 (515)
Spectrum exposure4.1 ks

[Back to top]

Late Time spectrum (T0 + 22844 to 59810 s)

Download spectral files for Late Time spectrum.

Plots to download

PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+44907 s

NH (Galactic)1.91 × 1020 cm-2
NH (intrinsic)1.1 (+0.4, -0.4) × 1021 cm-2
z of absorber0.34
Photon index1.69 (+0.08, -0.08)
Flux (0.3-10 keV)
(Observed)
7.9 (+0.4, -0.4) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
8.8 (+0.4, -0.4) × 10-11 erg cm-2 s-1
Counts to flux (obs)3.92 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.38 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
454.04 (515)
Spectrum exposure4.1 ks

[Back to top]