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Swift-XRT spectra of GRB 080430

Last updated after receiving ObsID 00310613033, version 14

Data were analysed using HEASOFT version 6.35.2

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Add time-sliced spectrum.

The spectral fits assume a redshift: 0.767 (GCN 7654)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 55 to 80996 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+85 s

N_H (Galactic)	9.92 × 10¹⁹ cm^-2
N_H (intrinsic)	2.9 (+1.1, -1.0) × 10²¹ cm^-2
z of absorber	0.767
Photon index	2.47 (+0.21, -0.18)
Flux (0.3-10 keV) (Observed)	4.0 (+0.4, -0.4) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.6 (+0.6, -0.5) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.62 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.68 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	263.47 (283)
Spectrum exposure	83 s

PC mode. Mean photon arrival: T0+26353 s

N_H (Galactic)	9.92 × 10¹⁹ cm^-2
N_H (intrinsic)	4.9 (+0.8, -0.8) × 10²¹ cm^-2
z of absorber	0.767
Photon index	1.96 (+0.09, -0.08)
Flux (0.3-10 keV) (Observed)	3.41 (+0.19, -0.18) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.37 (+0.19, -0.18) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.49 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.48 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	437.76 (462)
Spectrum exposure	30.7 ks

Late Time spectrum (T0 + 5606 to 80996 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+31138 s

N_H (Galactic)	9.92 × 10¹⁹ cm^-2
N_H (intrinsic)	5.5 (+1.0, -0.9) × 10²¹ cm^-2
z of absorber	0.767
Photon index	1.98 (+0.09, -0.09)
Flux (0.3-10 keV) (Observed)	2.76 (+0.16, -0.15) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.63 (+0.18, -0.17) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.47 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.56 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	437.29 (428)
Spectrum exposure	29.2 ks