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Swift-XRT spectra of GRB 120312A

Last updated after receiving ObsID 00517566001, version 11.

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Time-averaged spectrum (T0 + 105 to 77240 s)

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WT and PC mode spectra of GRB 120312A

WT mode. Mean photon arrival: T0+107 s

N_H (Galactic)	4.1 × 10²⁰ cm^-2
N_H (intrinsic)	1.4 (+7.5, -1.4) × 10²¹ cm^-2
z of absorber	0
Photon index	1.6 (+1.5, -1.2)
Flux (0.3-10 keV) (Observed)	1.67 (+1.76, -0.95) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.99 (+1.32, -0.95) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.9 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.6 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	10.65 (13)
Exposure time	5 s

PC mode. Mean photon arrival: T0+2877 s

N_H (Galactic)	4.1 × 10²⁰ cm^-2
N_H (intrinsic)	1.18 (+0.94, -0.81) × 10²¹ cm^-2
z of absorber	0
Photon index	1.61 (+0.27, -0.26)
Flux (0.3-10 keV) (Observed)	1.05 (+0.18, -0.15) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.27 (+0.16, -0.13) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.7 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.7 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	180.18 (221)
Exposure time	17.8 ks

Late Time spectrum (T0 + 5512 to 77240 s)

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PC mode spectrum of GRB 120312A

PC mode. Mean photon arrival: T0+12394 s

N_H (Galactic)	4.1 × 10²⁰ cm^-2
N_H (intrinsic)	9.8 (+21.9, -9.8) × 10²⁰ cm^-2
z of absorber	0
Photon index	2.20 (+0.91, -0.57)
Flux (0.3-10 keV) (Observed)	1.56 (+0.60, -0.47) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.30 (+0.85, -0.61) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	3.4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.0 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	38.80 (55)
Exposure time	15.7 ks