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Swift-XRT spectra of GRB 130420B

Last updated after receiving ObsID 00553996002, version 6

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 58 to 39893 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+61 s

N_H (Galactic)	1.52 × 10²⁰ cm^-2
N_H (intrinsic)	2.1 (+6.8, -2.1) × 10²¹ cm^-2
z of absorber	0
Photon index	2.03 (+1.37, -0.68)
Flux (0.3-10 keV) (Observed)	2.4 (+2.7, -1.4) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.4 (+4.9, -1.6) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.83 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.00 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	18.62 (20)
Spectrum exposure	7 s

PC mode. Mean photon arrival: T0+8614 s

N_H (Galactic)	1.52 × 10²⁰ cm^-2
N_H (intrinsic)	5 (+10, -5) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.8 (+0.4, -0.3)
Flux (0.3-10 keV) (Observed)	1.20 (+0.30, -0.23) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.34 (+0.25, -0.21) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.63 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.07 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	78.45 (113)
Spectrum exposure	6.3 ks

Late Time spectrum (T0 + 4000 to 39893 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+8990 s

N_H (Galactic)	1.52 × 10²⁰ cm^-2
N_H (intrinsic)	5.1 (+10.3, -5.1) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.8 (+0.4, -0.3)
Flux (0.3-10 keV) (Observed)	1.16 (+0.30, -0.23) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.31 (+0.25, -0.21) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.54 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.00 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	78.25 (105)
Spectrum exposure	6.1 ks