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Swift-XRT spectra of GRB 110820A

Last updated after receiving ObsID 00501095006, version 12

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 82 to 24532 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+246 s

N_H (Galactic)	4.78 × 10²¹ cm^-2
N_H (intrinsic)	5.3 (+1.1, -1.1) × 10²¹ cm^-2
z of absorber	0
Photon index	1.21 (+0.08, -0.08)
Flux (0.3-10 keV) (Observed)	4.23 (+0.16, -0.16) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.27 (+0.17, -0.16) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	7.19 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.97 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	699.79 (741)
Spectrum exposure	110 s

PC mode. Mean photon arrival: T0+4793 s

N_H (Galactic)	4.78 × 10²¹ cm^-2
N_H (intrinsic)	2.4 (+2.4, -2.0) × 10²¹ cm^-2
z of absorber	0
Photon index	1.77 (+0.28, -0.26)
Flux (0.3-10 keV) (Observed)	3.8 (+0.6, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.69 (+1.04, -0.71) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	5.00 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.58 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	193.11 (231)
Spectrum exposure	9.9 ks

Late Time spectrum (T0 + 4885 to 24532 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+13127 s

N_H (Galactic)	4.78 × 10²¹ cm^-2
N_H (intrinsic)	2.1 (+3.5, -2.1) × 10²¹ cm^-2
z of absorber	0
Photon index	2.5 (+0.6, -0.5)
Flux (0.3-10 keV) (Observed)	6.5 (+1.7, -1.3) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.69 (+1.25, -0.52) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.38 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.74 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	69.88 (97)
Spectrum exposure	8.7 ks