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Swift-XRT spectra of GRB 090407

Last updated after receiving ObsID 00348650015, version 17

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 96 to 100288 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+208 s

N_H (Galactic)	5.06 × 10²⁰ cm^-2
N_H (intrinsic)	3.58 (+0.28, -0.27) × 10²¹ cm^-2
z of absorber	0
Photon index	1.91 (+0.05, -0.05)
Flux (0.3-10 keV) (Observed)	1.34 (+0.04, -0.04) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.00 (+0.05, -0.05) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	4.02 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.00 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	658.57 (702)
Spectrum exposure	273 s

PC mode. Mean photon arrival: T0+30055 s

N_H (Galactic)	5.06 × 10²⁰ cm^-2
N_H (intrinsic)	3.1 (+0.5, -0.4) × 10²¹ cm^-2
z of absorber	0
Photon index	2.22 (+0.11, -0.11)
Flux (0.3-10 keV) (Observed)	2.44 (+0.14, -0.13) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.24 (+0.23, -0.28) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.38 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.89 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	418.28 (440)
Spectrum exposure	38.0 ks

Late Time spectrum (T0 + 5352 to 100288 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+36718 s

N_H (Galactic)	5.06 × 10²⁰ cm^-2
N_H (intrinsic)	3.5 (+0.5, -0.5) × 10²¹ cm^-2
z of absorber	0
Photon index	2.24 (+0.13, -0.12)
Flux (0.3-10 keV) (Observed)	1.94 (+0.13, -0.12) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.50 (+0.22, -0.26) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.40 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.12 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	394.23 (413)
Spectrum exposure	36.4 ks