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Swift-XRT spectra of GRB 100901A

Last updated after receiving ObsID 00433065023, version 9

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.408 (GCN 11164)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 147 to 33229 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+400 s

N_H (Galactic)	9.49 × 10²⁰ cm^-2
N_H (intrinsic)	3.43 (+1.01, -0.96) × 10²¹ cm^-2
z of absorber	1.408
Photon index	1.50 (+0.04, -0.04)
Flux (0.3-10 keV) (Observed)	1.28 (+0.03, -0.03) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.44 (+0.03, -0.03) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	4.47 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.04 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	687.92 (739)
Spectrum exposure	420 s

PC mode. Mean photon arrival: T0+15618 s

N_H (Galactic)	9.49 × 10²⁰ cm^-2
N_H (intrinsic)	3.1 (+1.5, -1.4) × 10²¹ cm^-2
z of absorber	1.408
Photon index	1.97 (+0.08, -0.08)
Flux (0.3-10 keV) (Observed)	1.15 (+0.06, -0.06) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.46 (+0.06, -0.06) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.42 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.36 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	406.85 (470)
Spectrum exposure	12.9 ks

Late Time spectrum (T0 + 4000 to 33229 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+16275 s

N_H (Galactic)	9.49 × 10²⁰ cm^-2
N_H (intrinsic)	3.1 (+1.6, -1.5) × 10²¹ cm^-2
z of absorber	1.408
Photon index	2.00 (+0.08, -0.08)
Flux (0.3-10 keV) (Observed)	10.0 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.28 (+0.06, -0.05) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.37 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.34 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	393.16 (450)
Spectrum exposure	12.6 ks