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Swift-XRT spectra of GRB 070808

Last updated after receiving ObsID 00287260003, version 20.

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Time-averaged spectrum (T0 + 118 to 77008 s)

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WT and PC mode spectra of GRB 070808

WT mode. Mean photon arrival: T0+126 s

N_H (Galactic)	2.8 × 10²⁰ cm^-2
N_H (intrinsic)	8.0 (+5.4, -4.0) × 10²¹ cm^-2
z of absorber	0
Photon index	1.58 (+0.66, -0.57)
Flux (0.3-10 keV) (Observed)	5.2 (+1.9, -1.4) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.8 (+4.4, -1.6) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	6.3 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	9.4 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	91.08 (84)
Exposure time	15 s

PC mode. Mean photon arrival: T0+5519 s

N_H (Galactic)	2.8 × 10²⁰ cm^-2
N_H (intrinsic)	8.6 (+2.4, -2.1) × 10²¹ cm^-2
z of absorber	0
Photon index	2.05 (+0.31, -0.29)
Flux (0.3-10 keV) (Observed)	1.29 (+0.18, -0.16) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.69 (+0.81, -0.42) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	5.5 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.2 × 10^-10 erg cm^-2 ct^-1
C-stat (dof)	211.58 (252)
Exposure time	20.7 ks

Late Time spectrum (T0 + 5082 to 77008 s)

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PC mode spectrum of GRB 070808

PC mode. Mean photon arrival: T0+22088 s

N_H (Galactic)	2.8 × 10²⁰ cm^-2
N_H (intrinsic)	1.02 (+0.57, -0.41) × 10²² cm^-2
z of absorber	0
Photon index	3.57 (+1.02, -0.67)
Flux (0.3-10 keV) (Observed)	1.71 (+0.52, -0.39) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.41 (1.00 × 10¹², -0.49) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.1 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.4 × 10^-10 erg cm^-2 ct^-1
C-stat (dof)	52.77 (63)
Exposure time	19.0 ks