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Swift-XRT spectra of GRB 111121A

Last updated after receiving ObsID 00508161003, version 10

Data were analysed using HEASOFT version -1

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 83 to 64506 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+139 s

N_H (Galactic)	2.04 × 10²¹ cm^-2
N_H (intrinsic)	3.9 (+0.8, -0.7) × 10²¹ cm^-2
z of absorber	0
Photon index	1.53 (+0.09, -0.08)
Flux (0.3-10 keV) (Observed)	1.79 (+0.08, -0.08) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.35 (+0.09, -0.09) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	5.40 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.11 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	546.10 (632)
Spectrum exposure	180 s

PC mode. Mean photon arrival: T0+8464 s

N_H (Galactic)	2.04 × 10²¹ cm^-2
N_H (intrinsic)	2.8 (+1.2, -1.1) × 10²¹ cm^-2
z of absorber	0
Photon index	1.79 (+0.18, -0.17)
Flux (0.3-10 keV) (Observed)	3.3 (+0.3, -0.3) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.70 (+0.46, -0.29) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.57 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.57 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	275.94 (346)
Spectrum exposure	17.3 ks

Late Time spectrum (T0 + 4196 to 64506 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+11563 s

N_H (Galactic)	2.04 × 10²¹ cm^-2
N_H (intrinsic)	2.5 (+1.4, -1.2) × 10²¹ cm^-2
z of absorber	0
Photon index	1.76 (+0.21, -0.20)
Flux (0.3-10 keV) (Observed)	1.92 (+0.24, -0.21) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.70 (+0.32, -0.25) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.57 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.42 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	234.52 (301)
Spectrum exposure	16.6 ks