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Swift-XRT spectra of GRB 211211A

Last updated after receiving ObsID 01088940007, version 10

Data were analysed using HEASOFT version 6.35.2

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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)

Download spectral files for Time-averaged spectrum.

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+175 s

N_H (Galactic)	1.76 × 10²⁰ cm^-2
N_H (intrinsic)	2.5 (+0.9, -0.8) × 10²⁰ cm^-2
z of absorber	0.0763
Photon index	1.79 (+0.03, -0.03)
Flux (0.3-10 keV) (Observed)	4.58 (+0.10, -0.10) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.95 (+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)	3.86 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	711.38 (715)
Spectrum exposure	214 s

PC mode. Mean photon arrival: T0+9405 s

N_H (Galactic)	1.76 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+1.59 × 10²⁰, -0) cm^-2
z of absorber	0.0763
Photon index	1.49 (+0.08, -0.07)
Flux (0.3-10 keV) (Observed)	2.91 (+0.16, -0.20) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.98 (+0.16, -0.19) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.36 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.47 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	317.45 (396)
Spectrum exposure	3.5 ks

Late Time spectrum (T0 + 4001 to 22146 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+10916 s

N_H (Galactic)	1.76 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+3.12 × 10²⁰, -0) cm^-2
z of absorber	0.0763
Photon index	1.507 (+0.128, -0.078)
Flux (0.3-10 keV) (Observed)	2.43 (+0.18, -0.21) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.49 (+0.20, -0.19) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.32 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.42 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	284.00 (350)
Spectrum exposure	3.0 ks