Skip banner and navigation tools.

 |  site map

Swift-XRT spectra of GRB 180402A

Last updated after receiving ObsID 00821103001, version 8

Data were analysed using HEASOFT version 6.32

About these products.

Get another burst.

Add time-sliced spectrum.

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 83 to 18278 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+95 s

NH (Galactic)2.94 × 1021 cm-2
NH (intrinsic)1.2 (+5.2, -1.2) × 1021 cm-2
z of absorber0
Photon index1.1 (+0.5, -0.4)
Flux (0.3-10 keV)
(Observed)
4.10 (+1.19, -0.95) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.63 (+1.06, -0.90) × 10-10 erg cm-2 s-1
Counts to flux (obs)6.05 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.84 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
79.82 (123)
Spectrum exposure24 s

PC mode. Mean photon arrival: T0+750 s

NH (Galactic)2.94 × 1021 cm-2
NH (intrinsic)9.1 (+23.2, -9.1) × 1020 cm-2
z of absorber0
Photon index1.29 (+0.29, -0.25)
Flux (0.3-10 keV)
(Observed)
6.5 (+1.2, -1.0) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
7.6 (+0.5, -0.9) × 10-12 erg cm-2 s-1
Counts to flux (obs)6.01 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.02 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
150.07 (187)
Spectrum exposure5.4 ks

[Back to top]

Late Time spectrum (T0 + 4319 to 18278 s)

Download spectral files for Late Time spectrum.

Plots to download

PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+7736 s

NH (Galactic)2.94 × 1021 cm-2
NH (intrinsic)0 (+9.13 × 1021, -0) cm-2
z of absorber0
Photon index0.55 (+1.02, -0.79)
Flux (0.3-10 keV)
(Observed)
4.4 (+3.4, -2.4) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.5 (+4.3, -2.4) × 10-13 erg cm-2 s-1
Counts to flux (obs)9.90 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.02 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
19.92 (11)
Spectrum exposure4.4 ks

[Back to top]