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Swift-XRT spectra of GRB 160227A

Last updated after receiving ObsID 00676423022, version 11

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 2.38 (GCN 19109)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 158 to 54086 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+396 s

N_H (Galactic)	4.14 × 10²⁰ cm^-2
N_H (intrinsic)	4.5 (+1.2, -1.2) × 10²¹ cm^-2
z of absorber	2.38
Photon index	1.732 (+0.028, -0.028)
Flux (0.3-10 keV) (Observed)	1.094 (+0.022, -0.021) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.216 (+0.020, -0.019) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.68 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.08 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	814.32 (758)
Spectrum exposure	691 s

PC mode. Mean photon arrival: T0+19412 s

N_H (Galactic)	4.14 × 10²⁰ cm^-2
N_H (intrinsic)	1.6 (+2.9, -1.6) × 10²¹ cm^-2
z of absorber	2.38
Photon index	1.68 (+0.07, -0.07)
Flux (0.3-10 keV) (Observed)	1.19 (+0.07, -0.06) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.29 (+0.06, -0.06) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.85 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.16 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	403.55 (477)
Spectrum exposure	12.5 ks

Late Time spectrum (T0 + 5939 to 54086 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+24829 s

N_H (Galactic)	4.14 × 10²⁰ cm^-2
N_H (intrinsic)	4 (+4, -3) × 10²¹ cm^-2
z of absorber	2.38
Photon index	1.70 (+0.09, -0.08)
Flux (0.3-10 keV) (Observed)	9.0 (+0.6, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.9 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.83 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.21 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	368.58 (437)
Spectrum exposure	10.9 ks