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Swift-XRT spectra of GRB 121217A

Last updated after receiving ObsID 00542441024, version 7

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 70 to 59251 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+95 s

N_H (Galactic)	5.15 × 10²¹ cm^-2
N_H (intrinsic)	0 (+2.27 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	2.037 (+0.113, -0.073)
Flux (0.3-10 keV) (Observed)	5.3 (+0.5, -0.3) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.33 (+0.14, -0.97) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.80 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.97 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	316.87 (398)
Spectrum exposure	78 s

PC mode. Mean photon arrival: T0+18255 s

N_H (Galactic)	5.15 × 10²¹ cm^-2
N_H (intrinsic)	7 (+7, -6) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.84 (+0.10, -0.09)
Flux (0.3-10 keV) (Observed)	1.52 (+0.08, -0.07) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.32 (+0.13, -0.11) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.56 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.96 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	480.81 (567)
Spectrum exposure	13.6 ks

Late Time spectrum (T0 + 5507 to 59251 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+24081 s

N_H (Galactic)	5.15 × 10²¹ cm^-2
N_H (intrinsic)	10 (+8, -7) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.95 (+0.11, -0.11)
Flux (0.3-10 keV) (Observed)	9.7 (+0.6, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.591 (+0.119, -0.095) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.33 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.10 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	405.49 (505)
Spectrum exposure	12.8 ks