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Swift-XRT spectra of GRB 240218A

Last updated after receiving ObsID 01215912001, version 5

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 6.782 (GCN 35756)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 155 to 23483 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+219 s

N_H (Galactic)	4.19 × 10²⁰ cm^-2
N_H (intrinsic)	1.39 (+0.29, -0.27) × 10²³ cm^-2
z of absorber	6.782
Photon index	1.39 (+0.04, -0.04)
Flux (0.3-10 keV) (Observed)	4.27 (+0.13, -0.12) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.71 (+0.12, -0.11) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	4.81 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.31 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	735.81 (722)
Spectrum exposure	120 s

PC mode. Mean photon arrival: T0+2553 s

N_H (Galactic)	4.19 × 10²⁰ cm^-2
N_H (intrinsic)	4.4 (+10.4, -4.4) × 10²² cm^-2
z of absorber	6.782
Photon index	2.03 (+0.32, -0.27)
Flux (0.3-10 keV) (Observed)	1.38 (+0.28, -0.23) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.63 (+0.26, -0.23) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.25 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.85 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	97.95 (130)
Spectrum exposure	604 s

Late Time spectrum (T0 + 11030 to 23483 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+23445 s

N_H (Galactic)	4.19 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+2.90 × 10²⁴, -0) cm^-2
z of absorber	6.782
Photon index	1.7 (+1.6, -1.0)
Flux (0.3-10 keV) (Observed)	5 (+4, -3) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5 (+8, -3) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.28 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.56 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	4.73 (4)
Spectrum exposure	82 s