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Swift-XRT spectra of GRB 211211A

Last updated after receiving ObsID 01088940007, version 10

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 0.0763 (Rastinejad et al., 2022)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 82 to 22146 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+173 s

N_H (Galactic)	1.76 × 10²⁰ cm^-2
N_H (intrinsic)	2.2 (+0.9, -0.8) × 10²⁰ cm^-2
z of absorber	0.0763
Photon index	1.78 (+0.03, -0.03)
Flux (0.3-10 keV) (Observed)	4.691 (+0.102, -0.100) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.04 (+0.09, -0.09) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.57 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.83 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	732.46 (731)
Spectrum exposure	214 s

PC mode. Mean photon arrival: T0+8608 s

N_H (Galactic)	1.76 × 10²⁰ cm^-2
N_H (intrinsic)	4.7 (+26.9, -4.7) × 10¹⁹ cm^-2
z of absorber	0.0763
Photon index	1.519 (+0.103, -0.079)
Flux (0.3-10 keV) (Observed)	3.04 (+0.22, -0.21) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.13 (+0.21, -0.19) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.21 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.33 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	330.98 (412)
Spectrum exposure	3.5 ks

Late Time spectrum (T0 + 4001 to 22146 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+10004 s

N_H (Galactic)	1.76 × 10²⁰ cm^-2
N_H (intrinsic)	1.0 (+3.3, -1.0) × 10²⁰ cm^-2
z of absorber	0.0763
Photon index	1.55 (+0.12, -0.10)
Flux (0.3-10 keV) (Observed)	2.57 (+0.22, -0.20) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.67 (+0.20, -0.18) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.15 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.31 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	304.69 (365)
Spectrum exposure	3.0 ks