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Swift-XRT spectra of GRB 120404A

Last updated after receiving ObsID 00519380006, version 13

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 2.87 (GCN 13217)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 136 to 33853 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+176 s

N_H (Galactic)	3.98 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+6.74 × 10²¹, -0) cm^-2
z of absorber	2.87
Photon index	1.645 (+0.136, -0.088)
Flux (0.3-10 keV) (Observed)	3.45 (+0.29, -0.33) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.66 (+0.31, -0.29) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.74 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.98 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	261.64 (356)
Spectrum exposure	99 s

PC mode. Mean photon arrival: T0+4499 s

N_H (Galactic)	3.98 × 10²⁰ cm^-2
N_H (intrinsic)	6 (+7, -6) × 10²¹ cm^-2
z of absorber	2.87
Photon index	1.81 (+0.12, -0.11)
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)	8.6 (+0.6, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.58 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.03 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	340.56 (345)
Spectrum exposure	7.8 ks

Late Time spectrum (T0 + 4740 to 33853 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+7780 s

N_H (Galactic)	3.98 × 10²⁰ cm^-2
N_H (intrinsic)	7 (+9, -7) × 10²¹ cm^-2
z of absorber	2.87
Photon index	1.99 (+0.17, -0.16)
Flux (0.3-10 keV) (Observed)	3.2 (+0.4, -0.3) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.8 (+0.3, -0.3) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.26 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.81 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	245.90 (242)
Spectrum exposure	6.6 ks