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Swift-XRT spectra of GRB 121027A

Last updated after receiving ObsID 00536831030, version 7

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 1.773 (GCN 13930)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 73 to 76246 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+4295 s

N_H (Galactic)	1.59 × 10²⁰ cm^-2
N_H (intrinsic)	2.03 (+0.10, -0.09) × 10²² cm^-2
z of absorber	1.773
Photon index	1.643 (+0.020, -0.020)
Flux (0.3-10 keV) (Observed)	1.511 (+0.020, -0.020) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.815 (+0.019, -0.019) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	4.22 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.07 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	811.61 (842)
Spectrum exposure	1.2 ks

PC mode. Mean photon arrival: T0+24991 s

N_H (Galactic)	1.59 × 10²⁰ cm^-2
N_H (intrinsic)	2.0 (+0.3, -0.3) × 10²² cm^-2
z of absorber	1.773
Photon index	2.23 (+0.11, -0.10)
Flux (0.3-10 keV) (Observed)	1.13 (+0.07, -0.06) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.706 (+0.106, -0.094) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.07 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.63 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	368.88 (396)
Spectrum exposure	10.4 ks

Late Time spectrum (T0 + 16347 to 76246 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+28561 s

N_H (Galactic)	1.59 × 10²⁰ cm^-2
N_H (intrinsic)	2.1 (+0.4, -0.3) × 10²² cm^-2
z of absorber	1.773
Photon index	2.29 (+0.12, -0.11)
Flux (0.3-10 keV) (Observed)	9.7 (+0.6, -0.6) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.516 (+0.108, -0.094) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.01 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.70 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	367.13 (365)
Spectrum exposure	9.7 ks