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Swift-XRT spectra of GRB 130315A

Last updated after receiving ObsID 00551126004, version 9.

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Time-averaged spectrum (T0 + 167 to 56830 s)

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WT and PC mode spectra of GRB 130315A

WT mode. Mean photon arrival: T0+244 s

N_H (Galactic)	3.6 × 10²¹ cm^-2
N_H (intrinsic)	0 (+8 × 10¹⁹, -0) cm^-2
z of absorber	0
Photon index	1.379 (+0.026, -0.019)
Flux (0.3-10 keV) (Observed)	2.53 (+0.06, -0.05) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.97 (+0.05, -0.06) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	5 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	786.86 (798)
Spectrum exposure	292 s

PC mode. Mean photon arrival: T0+12760 s

N_H (Galactic)	3.6 × 10²¹ cm^-2
N_H (intrinsic)	2.7 (+15.1, -2.7) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.91 (+0.28, -0.19)
Flux (0.3-10 keV) (Observed)	1.30 (+0.20, -0.18) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.92 (+0.32, -0.20) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	166.80 (226)
Spectrum exposure	16.9 ks

Late Time spectrum (T0 + 4000 to 56830 s)

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PC mode spectrum of GRB 130315A

PC mode. Mean photon arrival: T0+19530 s

N_H (Galactic)	3.6 × 10²¹ cm^-2
N_H (intrinsic)	2.6 (+21.3, -2.6) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.85 (+0.36, -0.24)
Flux (0.3-10 keV) (Observed)	6.8 (+1.3, -1.1) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.7 (+2.2, -1.1) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	114.80 (167)
Spectrum exposure	16.7 ks