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Swift-XRT spectra of GRB 120308A

Last updated after receiving ObsID 00517234002, version 5.

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Time-averaged spectrum (T0 + 98 to 54336 s)

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WT and PC mode spectra of GRB 120308A

WT mode. Mean photon arrival: T0+160 s

N_H (Galactic)	2.9 × 10²⁰ cm^-2
N_H (intrinsic)	1.49 (+0.16, -0.15) × 10²¹ cm^-2
z of absorber	0
Photon index	3.05 (+0.09, -0.09)
Flux (0.3-10 keV) (Observed)	1.020 (+0.028, -0.028) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.669 (+0.096, -0.192) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	2.3 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	441.05 (453)
Exposure time	184 s

PC mode. Mean photon arrival: T0+8395 s

N_H (Galactic)	2.9 × 10²⁰ cm^-2
N_H (intrinsic)	2.8 (+2.1, -2.0) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.65 (+0.09, -0.08)
Flux (0.3-10 keV) (Observed)	7.1 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.83 (+0.33, -0.27) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	514.81 (520)
Exposure time	22.7 ks

Late Time spectrum (T0 + 5843 to 54336 s)

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PC mode spectrum of GRB 120308A

PC mode. Mean photon arrival: T0+15066 s

N_H (Galactic)	2.9 × 10²⁰ cm^-2
N_H (intrinsic)	7 (+3, -3) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.74 (+0.13, -0.12)
Flux (0.3-10 keV) (Observed)	3.31 (+0.25, -0.23) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.91 (+0.24, -0.21) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	362.93 (410)
Exposure time	20.6 ks