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Swift-XRT spectra of GRB 070520B

Last updated after receiving ObsID 00279898004, version 21

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 104 to 12052 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+210 s

N_H (Galactic)	4.30 × 10²⁰ cm^-2
N_H (intrinsic)	2.20 (+0.18, -0.17) × 10²¹ cm^-2
z of absorber	0
Photon index	2.40 (+0.06, -0.06)
Flux (0.3-10 keV) (Observed)	9.07 (+0.24, -0.24) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.63 (+0.07, -0.06) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	2.91 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.23 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	653.51 (627)
Spectrum exposure	283 s

PC mode. Mean photon arrival: T0+3340 s

N_H (Galactic)	4.30 × 10²⁰ cm^-2
N_H (intrinsic)	1.2 (+1.4, -1.1) × 10²¹ cm^-2
z of absorber	0
Photon index	2.1 (+0.5, -0.4)
Flux (0.3-10 keV) (Observed)	1.36 (+0.36, -0.28) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.8 (+0.4, -0.3) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.29 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.46 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	85.64 (99)
Spectrum exposure	5.1 ks

Late Time spectrum (T0 + 4001 to 12052 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+7028 s

N_H (Galactic)	4.30 × 10²⁰ cm^-2
N_H (intrinsic)	1.5 (+2.2, -1.5) × 10²¹ cm^-2
z of absorber	0
Photon index	2.5 (+0.8, -0.7)
Flux (0.3-10 keV) (Observed)	4.9 (+1.9, -1.3) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.5 (+8.0, -2.0) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	2.76 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.78 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	48.33 (43)
Spectrum exposure	4.8 ks