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Swift-XRT spectra of GRB 070508

Last updated after receiving ObsID 00278854009, version 19

Data were analysed using HEASOFT version 6.35.2

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The spectral fits assume a redshift: 0.82 (GCN 6398)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 82 to 80858 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+535 s

N_H (Galactic)	1.21 × 10²¹ cm^-2
N_H (intrinsic)	1.31 (+0.10, -0.09) × 10²² cm^-2
z of absorber	0.82
Photon index	1.79 (+0.03, -0.03)
Flux (0.3-10 keV) (Observed)	6.59 (+0.13, -0.13) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.26 (+0.17, -0.16) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	4.32 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.07 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	829.00 (804)
Spectrum exposure	1.2 ks

PC mode. Mean photon arrival: T0+15656 s

N_H (Galactic)	1.21 × 10²¹ cm^-2
N_H (intrinsic)	8.2 (+2.6, -2.2) × 10²¹ cm^-2
z of absorber	0.82
Photon index	1.71 (+0.11, -0.10)
Flux (0.3-10 keV) (Observed)	1.12 (+0.08, -0.07) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.46 (+0.08, -0.08) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.40 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.73 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	431.49 (474)
Spectrum exposure	12.0 ks

Late Time spectrum (T0 + 6659 to 80858 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+24410 s

N_H (Galactic)	1.21 × 10²¹ cm^-2
N_H (intrinsic)	6.2 (+2.7, -2.3) × 10²¹ cm^-2
z of absorber	0.82
Photon index	1.80 (+0.14, -0.13)
Flux (0.3-10 keV) (Observed)	4.8 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.3 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.06 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.38 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	372.00 (361)
Spectrum exposure	11.5 ks