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Swift-XRT spectra of GRB 121201A

Last updated after receiving ObsID 00540178002, version 6

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 3.385 (GCN 14035)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 118 to 45606 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+131 s

N_H (Galactic)	2.05 × 10²⁰ cm^-2
N_H (intrinsic)	7 (+43, -7) × 10²¹ cm^-2
z of absorber	3.385
Photon index	1.21 (+0.37, -0.29)
Flux (0.3-10 keV) (Observed)	2.7 (+0.9, -0.7) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.8 (+0.8, -0.7) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	4.68 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.82 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	66.97 (97)
Spectrum exposure	24 s

PC mode. Mean photon arrival: T0+3369 s

N_H (Galactic)	2.05 × 10²⁰ cm^-2
N_H (intrinsic)	5.3 (+12.5, -5.3) × 10²¹ cm^-2
z of absorber	3.385
Photon index	1.56 (+0.16, -0.14)
Flux (0.3-10 keV) (Observed)	4.1 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.3 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.14 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.35 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	225.97 (286)
Spectrum exposure	10.7 ks

Late Time spectrum (T0 + 4459 to 45606 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+10042 s

N_H (Galactic)	2.05 × 10²⁰ cm^-2
N_H (intrinsic)	1.4 (+2.2, -1.4) × 10²² cm^-2
z of absorber	3.385
Photon index	2.1 (+0.3, -0.3)
Flux (0.3-10 keV) (Observed)	7.2 (+1.5, -1.2) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.4 (+1.4, -1.3) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	3.15 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.68 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	102.38 (117)
Spectrum exposure	9.7 ks