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Swift-XRT spectra of GRB 131227A

Last updated after receiving ObsID 00582184003, version 5

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 63 to 57010 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+128 s

N_H (Galactic)	2.95 × 10²¹ cm^-2
N_H (intrinsic)	4.9 (+1.8, -1.5) × 10²¹ cm^-2
z of absorber	0
Photon index	2.26 (+0.23, -0.21)
Flux (0.3-10 keV) (Observed)	2.01 (+0.21, -0.20) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.38 (+1.04, -0.60) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.78 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.21 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	248.19 (323)
Spectrum exposure	154 s

PC mode. Mean photon arrival: T0+3162 s

N_H (Galactic)	2.95 × 10²¹ cm^-2
N_H (intrinsic)	5.2 (+1.8, -1.6) × 10²¹ cm^-2
z of absorber	0
Photon index	1.90 (+0.20, -0.19)
Flux (0.3-10 keV) (Observed)	6.9 (+0.7, -0.6) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.16 (+0.17, -0.12) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.84 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.11 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	275.67 (351)
Spectrum exposure	10.4 ks

Late Time spectrum (T0 + 4734 to 57010 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+10468 s

N_H (Galactic)	2.95 × 10²¹ cm^-2
N_H (intrinsic)	7 (+5, -4) × 10²¹ cm^-2
z of absorber	0
Photon index	2.1 (+0.5, -0.4)
Flux (0.3-10 keV) (Observed)	1.49 (+0.33, -0.26) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.07 (+1.82, -0.58) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.56 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	9.37 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	128.06 (139)
Spectrum exposure	9.2 ks