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Swift-XRT spectra of GRB 150817A

Last updated after receiving ObsID 00652334003, version 15

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 71 to 46612 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+84 s

N_H (Galactic)	2.71 × 10²¹ cm^-2
N_H (intrinsic)	1.4 (+1.8, -1.4) × 10²¹ cm^-2
z of absorber	0
Photon index	2.1 (+0.3, -0.3)
Flux (0.3-10 keV) (Observed)	3.2 (+0.7, -0.5) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.30 (+1.31, -0.82) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.44 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.61 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	133.03 (184)
Spectrum exposure	32 s

PC mode. Mean photon arrival: T0+14571 s

N_H (Galactic)	2.71 × 10²¹ cm^-2
N_H (intrinsic)	1.5 (+0.7, -0.6) × 10²¹ cm^-2
z of absorber	0
Photon index	1.71 (+0.11, -0.10)
Flux (0.3-10 keV) (Observed)	6.9 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.4 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.67 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.35 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	475.50 (516)
Spectrum exposure	19.6 ks

Late Time spectrum (T0 + 4000 to 46612 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+15393 s

N_H (Galactic)	2.71 × 10²¹ cm^-2
N_H (intrinsic)	1.7 (+0.7, -0.6) × 10²¹ cm^-2
z of absorber	0
Photon index	1.72 (+0.11, -0.11)
Flux (0.3-10 keV) (Observed)	6.4 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.7 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.67 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.41 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	483.61 (509)
Spectrum exposure	19.5 ks