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Swift-XRT spectra of GRB 150428A

Last updated after receiving ObsID 00639275002, version 4

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 183 to 32533 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+7949 s

N_H (Galactic)	1.63 × 10²⁰ cm^-2
N_H (intrinsic)	4.5 (+2.4, -1.9) × 10²¹ cm^-2
z of absorber	0
Photon index	1.8 (+0.4, -0.3)
Flux (0.3-10 keV) (Observed)	1.52 (+0.33, -0.27) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.20 (+0.37, -0.28) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.48 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.51 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	103.60 (141)
Spectrum exposure	1.3 ks

Late Time spectrum (T0 + 28305 to 32533 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+29629 s

N_H (Galactic)	1.63 × 10²⁰ cm^-2
N_H (intrinsic)	4.6 (+5.2, -2.0) × 10²¹ cm^-2
z of absorber	0
Photon index	2.2 (+0.9, -0.8)
Flux (0.3-10 keV) (Observed)	2.21 (+1.24, -0.72) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.0 (+8.3, -1.2) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.75 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.79 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	25.47 (38)
Spectrum exposure	990 s