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Swift-XRT spectra of GRB 130408A

Last updated after receiving ObsID 00553132009, version 8

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 3.758 (GCN 14365)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 153 to 63642 s)

Download spectral files for Time-averaged spectrum.

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+157 s

N_H (Galactic)	3.20 × 10²¹ cm^-2
N_H (intrinsic)	0 (+1.56 × 10²³, -0) cm^-2
z of absorber	3.758
Photon index	2.03 (+1.05, -0.48)
Flux (0.3-10 keV) (Observed)	1.3 (+0.7, -0.6) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.09 (+1.94, -0.63) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.16 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.91 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	14.97 (27)
Spectrum exposure	9 s

PC mode. Mean photon arrival: T0+11121 s

N_H (Galactic)	3.20 × 10²¹ cm^-2
N_H (intrinsic)	0 (+5.27 × 10²¹, -0) cm^-2
z of absorber	3.758
Photon index	2.001 (+0.101, -0.052)
Flux (0.3-10 keV) (Observed)	3.87 (+0.21, -0.25) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.76 (+0.27, -0.26) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.74 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.56 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	383.71 (415)
Spectrum exposure	19.4 ks

Late Time spectrum (T0 + 4001 to 63642 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+15507 s

N_H (Galactic)	3.20 × 10²¹ cm^-2
N_H (intrinsic)	0 (+8.51 × 10²¹, -0) cm^-2
z of absorber	3.758
Photon index	2.188 (+0.101, -0.090)
Flux (0.3-10 keV) (Observed)	2.23 (+0.16, -0.12) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.69 (+0.21, -0.20) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.38 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.59 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	276.24 (349)
Spectrum exposure	18.8 ks