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Swift-XRT spectra of GRB 100915A

Last updated after receiving ObsID 00434178002, version 9.

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Time-averaged spectrum (T0 + 138 to 42001 s)

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WT and PC mode spectra of GRB 100915A

WT mode. Mean photon arrival: T0+178 s

N_H (Galactic)	2.3 × 10²¹ cm^-2
N_H (intrinsic)	2.2 (+1.3, -1.2) × 10²¹ cm^-2
z of absorber	0
Photon index	1.35 (+0.21, -0.20)
Flux (0.3-10 keV) (Observed)	5.50 (+0.67, -0.61) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.90 (+0.64, -0.61) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	6.1 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.7 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	321.49 (392)
Exposure time	87 s

PC mode. Mean photon arrival: T0+4980 s

N_H (Galactic)	2.3 × 10²¹ cm^-2
N_H (intrinsic)	3.3 (+1.3, -1.1) × 10²¹ cm^-2
z of absorber	0
Photon index	1.78 (+0.21, -0.20)
Flux (0.3-10 keV) (Observed)	3.53 (+0.38, -0.34) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.51 (+0.37, -0.51) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	5.3 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.3 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	274.33 (351)
Exposure time	16.5 ks

Late Time spectrum (T0 + 4910 to 42001 s)

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PC mode spectrum of GRB 100915A

PC mode. Mean photon arrival: T0+10823 s

N_H (Galactic)	2.3 × 10²¹ cm^-2
N_H (intrinsic)	3.3 (+1.7, -1.6) × 10²¹ cm^-2
z of absorber	0
Photon index	2.16 (+0.34, -0.32)
Flux (0.3-10 keV) (Observed)	9.6 (+1.6, -1.4) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.94 (+0.65, -0.31) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.8 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	128.14 (191)
Exposure time	15.2 ks