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Swift-XRT spectra of GRB 111209A

Last updated after receiving ObsID 00509337000, version 6

Data were analysed using HEASOFT version 6.29

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Add time-sliced spectrum.

The spectral fits assume a redshift: 0.677 (GCN 12648)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 425 to 100235 s)

Download spectral files for Time-averaged spectrum.

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+5427 s

N_H (Galactic)	1.54 × 10²⁰ cm^-2
N_H (intrinsic)	2.66 (+0.09, -0.08) × 10²¹ cm^-2
z of absorber	0.677
Photon index	1.265 (+0.007, -0.007)
Flux (0.3-10 keV) (Observed)	2.539 (+0.014, -0.014) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.709 (+0.013, -0.013) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	5.15 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.50 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	1220.52 (964)
Spectrum exposure	9.4 ks

PC mode. Mean photon arrival: T0+38659 s

N_H (Galactic)	1.54 × 10²⁰ cm^-2
N_H (intrinsic)	2.2 (+0.5, -0.5) × 10²¹ cm^-2
z of absorber	0.677
Photon index	1.75 (+0.06, -0.06)
Flux (0.3-10 keV) (Observed)	1.04 (+0.05, -0.04) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.18 (+0.04, -0.04) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.78 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.30 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	574.40 (554)
Spectrum exposure	25.0 ks

Late Time spectrum (T0 + 22701 to 100235 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+38659 s

N_H (Galactic)	1.54 × 10²⁰ cm^-2
N_H (intrinsic)	2.2 (+0.5, -0.5) × 10²¹ cm^-2
z of absorber	0.677
Photon index	1.75 (+0.06, -0.06)
Flux (0.3-10 keV) (Observed)	1.04 (+0.05, -0.04) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.18 (+0.04, -0.04) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.78 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.30 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	574.40 (554)
Spectrum exposure	25.0 ks