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Swift-XRT spectra of GRB 100902A

Last updated after receiving ObsID 00433160018, version 13

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 320 to 71557 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+437 s

N_H (Galactic)	2.17 × 10²¹ cm^-2
N_H (intrinsic)	3.47 (+0.25, -0.24) × 10²¹ cm^-2
z of absorber	0
Photon index	2.24 (+0.04, -0.04)
Flux (0.3-10 keV) (Observed)	3.97 (+0.09, -0.08) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.83 (+0.24, -0.25) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.62 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.13 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	706.74 (711)
Spectrum exposure	301 s

PC mode. Mean photon arrival: T0+12434 s

N_H (Galactic)	2.17 × 10²¹ cm^-2
N_H (intrinsic)	3.6 (+0.9, -0.9) × 10²¹ cm^-2
z of absorber	0
Photon index	2.19 (+0.16, -0.15)
Flux (0.3-10 keV) (Observed)	5.0 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.53 (+1.10, -0.86) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.80 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.25 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	339.36 (387)
Spectrum exposure	15.2 ks

Late Time spectrum (T0 + 6166 to 71557 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+21534 s

N_H (Galactic)	2.17 × 10²¹ cm^-2
N_H (intrinsic)	2.89 (+1.12, -1.00) × 10²¹ cm^-2
z of absorber	0
Photon index	2.17 (+0.21, -0.20)
Flux (0.3-10 keV) (Observed)	2.30 (+0.26, -0.23) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.2 (+0.6, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.75 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.81 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	269.14 (287)
Spectrum exposure	12.8 ks