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Swift-XRT spectra of GRB 150727A

Last updated after receiving ObsID 00650530005, version 2

Data were analysed using HEASOFT version 6.35.2

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Add time-sliced spectrum.

The spectral fits assume a redshift: 0.313 (GCN 18080)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 83 to 32531 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+224 s

N_H (Galactic)	9.81 × 10²⁰ cm^-2
N_H (intrinsic)	7.4 (+1.6, -1.5) × 10²⁰ cm^-2
z of absorber	0.313
Photon index	2.37 (+0.04, -0.04)
Flux (0.3-10 keV) (Observed)	9.44 (+0.19, -0.18) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.41 (+0.04, -0.03) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	2.78 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.14 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	825.72 (674)
Spectrum exposure	523 s

PC mode. Mean photon arrival: T0+14292 s

N_H (Galactic)	9.81 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+1.02 × 10²¹, -0) cm^-2
z of absorber	0.313
Photon index	1.81 (+0.25, -0.19)
Flux (0.3-10 keV) (Observed)	1.04 (+0.18, -0.17) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.21 (+0.20, -0.16) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.70 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.32 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	124.65 (123)
Spectrum exposure	7.5 ks

Late Time spectrum (T0 + 4001 to 32531 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+15647 s

N_H (Galactic)	9.81 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+1.15 × 10²¹, -0) cm^-2
z of absorber	0.313
Photon index	1.77 (+0.27, -0.21)
Flux (0.3-10 keV) (Observed)	9.8 (+1.8, -1.7) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.13 (+0.20, -0.16) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.77 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.37 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	123.06 (113)
Spectrum exposure	7.3 ks