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Swift-XRT spectra of GRB 140907A

Last updated after receiving ObsID 00611933002, version 7

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.21 (GCN 16797)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 89 to 109869 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+118 s

N_H (Galactic)	3.13 × 10²¹ cm^-2
N_H (intrinsic)	0 (+4.64 × 10²¹, -0) cm^-2
z of absorber	1.21
Photon index	2.31 (+0.34, -0.14)
Flux (0.3-10 keV) (Observed)	1.74 (+0.21, -0.28) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.12 (+0.62, -0.29) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.89 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.17 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	165.46 (200)
Spectrum exposure	69 s

PC mode. Mean photon arrival: T0+19354 s

N_H (Galactic)	3.13 × 10²¹ cm^-2
N_H (intrinsic)	5 (+4, -3) × 10²¹ cm^-2
z of absorber	1.21
Photon index	2.01 (+0.12, -0.11)
Flux (0.3-10 keV) (Observed)	3.04 (+0.21, -0.20) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.72 (+0.32, -0.28) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.84 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.96 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	377.57 (427)
Spectrum exposure	28.7 ks

Late Time spectrum (T0 + 4000 to 109869 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+25834 s

N_H (Galactic)	3.13 × 10²¹ cm^-2
N_H (intrinsic)	8 (+5, -4) × 10²¹ cm^-2
z of absorber	1.21
Photon index	2.12 (+0.14, -0.14)
Flux (0.3-10 keV) (Observed)	1.91 (+0.15, -0.14) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.23 (+0.31, -0.25) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.68 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.22 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	335.85 (369)
Spectrum exposure	28.1 ks