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Swift-XRT spectra of GRB 210912A

Last updated after receiving ObsID 01072990012, version 8

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 58 to 45926 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+70 s

N_H (Galactic)	2.40 × 10²⁰ cm^-2
N_H (intrinsic)	3.7 (+1.6, -1.3) × 10²¹ cm^-2
z of absorber	0
Photon index	3.6 (+0.7, -0.5)
Flux (0.3-10 keV) (Observed)	2.7 (+0.4, -0.4) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.51 (+1.98, -0.33) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	2.05 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.16 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	122.80 (137)
Spectrum exposure	32 s

PC mode. Mean photon arrival: T0+11443 s

N_H (Galactic)	2.40 × 10²⁰ cm^-2
N_H (intrinsic)	8 (+8, -7) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.62 (+0.25, -0.23)
Flux (0.3-10 keV) (Observed)	3.7 (+0.6, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.2 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.26 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.80 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	148.61 (194)
Spectrum exposure	5.9 ks

Late Time spectrum (T0 + 5494 to 45926 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+16703 s

N_H (Galactic)	2.40 × 10²⁰ cm^-2
N_H (intrinsic)	9.6 (+11.3, -8.8) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.61 (+0.31, -0.29)
Flux (0.3-10 keV) (Observed)	2.2 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.5 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.33 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.94 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	137.82 (148)
Spectrum exposure	5.3 ks