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Swift-XRT spectra of GRB 120521C

Last updated after receiving ObsID 00522656005, version 13

Data were analysed using HEASOFT version 6.29

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Add time-sliced spectrum.

The spectral fits assume a redshift: 6 (GCN 13348)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 75 to 70182 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+102 s

N_H (Galactic)	1.08 × 10²⁰ cm^-2
N_H (intrinsic)	9 (+4, -4) × 10²² cm^-2
z of absorber	6
Photon index	2.95 (+0.28, -0.26)
Flux (0.3-10 keV) (Observed)	2.19 (+0.24, -0.22) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.7 (+0.8, -0.6) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.32 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.87 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	165.84 (169)
Spectrum exposure	68 s

PC mode. Mean photon arrival: T0+11506 s

N_H (Galactic)	1.08 × 10²⁰ cm^-2
N_H (intrinsic)	1.6 (+5.2, -1.6) × 10²² cm^-2
z of absorber	6
Photon index	1.82 (+0.23, -0.19)
Flux (0.3-10 keV) (Observed)	9.6 (+1.6, -1.4) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.01 (+0.14, -0.12) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.51 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.70 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	140.75 (170)
Spectrum exposure	17.0 ks

Late Time spectrum (T0 + 5550 to 70182 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+21375 s

N_H (Galactic)	1.08 × 10²⁰ cm^-2
N_H (intrinsic)	9 (+9, -7) × 10²² cm^-2
z of absorber	6
Photon index	2.3 (+0.4, -0.4)
Flux (0.3-10 keV) (Observed)	3.8 (+0.9, -0.7) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.94 (+1.24, -0.87) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	2.85 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.74 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	83.41 (98)
Spectrum exposure	14.8 ks