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Swift-XRT spectra of GRB 150301B

Last updated after receiving ObsID 00633180002, version 11

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.5169 (GCN 17523)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 86 to 17782 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+114 s

N_H (Galactic)	6.15 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+3.50 × 10²¹, -0) cm^-2
z of absorber	1.5169
Photon index	1.60 (+0.25, -0.12)
Flux (0.3-10 keV) (Observed)	2.11 (+0.25, -0.35) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.29 (+0.28, -0.30) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.76 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.09 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	165.36 (219)
Spectrum exposure	67 s

PC mode. Mean photon arrival: T0+1994 s

N_H (Galactic)	6.15 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+2.87 × 10²¹, -0) cm^-2
z of absorber	1.5169
Photon index	1.76 (+0.17, -0.10)
Flux (0.3-10 keV) (Observed)	8.8 (+0.8, -1.0) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.7 (+0.9, -0.9) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.71 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.11 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	221.19 (247)
Spectrum exposure	3.2 ks

Late Time spectrum (T0 + 4001 to 17782 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+8423 s

N_H (Galactic)	6.15 × 10²⁰ cm^-2
N_H (intrinsic)	2.7 (+9.0, -2.7) × 10²¹ cm^-2
z of absorber	1.5169
Photon index	2.0 (+0.5, -0.4)
Flux (0.3-10 keV) (Observed)	1.4 (+0.4, -0.3) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.7 (+0.4, -0.3) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.27 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.01 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	69.50 (69)
Spectrum exposure	2.6 ks