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Swift-XRT spectra of GRB 110422A

Last updated after receiving ObsID 00451901013, version 14

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.77 (GCN 11977)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 820 to 59151 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+1014 s

N_H (Galactic)	4.65 × 10²⁰ cm^-2
N_H (intrinsic)	1.42 (+0.28, -0.26) × 10²² cm^-2
z of absorber	1.77
Photon index	1.71 (+0.07, -0.07)
Flux (0.3-10 keV) (Observed)	3.55 (+0.17, -0.16) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.29 (+0.16, -0.15) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	4.02 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.85 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	533.56 (569)
Spectrum exposure	394 s

PC mode. Mean photon arrival: T0+11346 s

N_H (Galactic)	4.65 × 10²⁰ cm^-2
N_H (intrinsic)	1.67 (+0.28, -0.27) × 10²² cm^-2
z of absorber	1.77
Photon index	1.80 (+0.07, -0.07)
Flux (0.3-10 keV) (Observed)	2.39 (+0.11, -0.10) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.01 (+0.11, -0.10) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.92 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.94 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	520.90 (556)
Spectrum exposure	12.5 ks

Late Time spectrum (T0 + 6611 to 59151 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+19513 s

N_H (Galactic)	4.65 × 10²⁰ cm^-2
N_H (intrinsic)	1.6 (+0.4, -0.3) × 10²² cm^-2
z of absorber	1.77
Photon index	1.84 (+0.10, -0.09)
Flux (0.3-10 keV) (Observed)	1.03 (+0.07, -0.06) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.31 (+0.06, -0.06) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.79 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.82 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	413.23 (450)
Spectrum exposure	11.3 ks