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Swift-XRT spectra of GRB 090422

Last updated after receiving ObsID 00349931008, version 13

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 70 to 73843 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+76 s

N_H (Galactic)	2.55 × 10²¹ cm^-2
N_H (intrinsic)	0 (+4.58 × 10²¹, -0) cm^-2
z of absorber	0
Photon index	1.9 (+0.9, -0.5)
Flux (0.3-10 keV) (Observed)	1.8 (+0.8, -0.7) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.43 (+2.21, -0.69) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.28 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.43 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	39.22 (48)
Spectrum exposure	14 s

PC mode. Mean photon arrival: T0+14957 s

N_H (Galactic)	2.55 × 10²¹ cm^-2
N_H (intrinsic)	2.13 (+1.10, -0.96) × 10²¹ cm^-2
z of absorber	0
Photon index	2.18 (+0.21, -0.20)
Flux (0.3-10 keV) (Observed)	1.20 (+0.13, -0.12) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.17 (+0.34, -0.25) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.67 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.61 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	254.11 (298)
Spectrum exposure	31.0 ks

Late Time spectrum (T0 + 4295 to 73843 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+22642 s

N_H (Galactic)	2.55 × 10²¹ cm^-2
N_H (intrinsic)	2.6 (+1.4, -1.2) × 10²¹ cm^-2
z of absorber	0
Photon index	2.33 (+0.27, -0.26)
Flux (0.3-10 keV) (Observed)	6.2 (+0.8, -0.7) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.28 (+0.33, -0.19) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.46 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.09 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	188.53 (235)
Spectrum exposure	30.1 ks