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Swift-XRT spectra of GRB 240218A

Last updated after receiving ObsID 01215912006, 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: 6.782 (GCN 35756)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 155 to 23488 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+220 s

N_H (Galactic)	4.19 × 10²⁰ cm^-2
N_H (intrinsic)	1.44 (+0.31, -0.29) × 10²³ cm^-2
z of absorber	6.782
Photon index	1.35 (+0.05, -0.04)
Flux (0.3-10 keV) (Observed)	4.49 (+0.13, -0.13) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.93 (+0.12, -0.12) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	4.99 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.47 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	798.98 (735)
Spectrum exposure	120 s

PC mode. Mean photon arrival: T0+3455 s

N_H (Galactic)	4.19 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+8.93 × 10²², -0) cm^-2
z of absorber	6.782
Photon index	2.09 (+0.36, -0.22)
Flux (0.3-10 keV) (Observed)	1.36 (+0.24, -0.25) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.53 (+0.28, -0.22) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.17 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.58 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	97.70 (92)
Spectrum exposure	611 s

Late Time spectrum (T0 + 11030 to 23488 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+23436 s

N_H (Galactic)	4.19 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+2.04 × 10²³, -0) cm^-2
z of absorber	6.782
Photon index	2.16 (+1.53, -0.66)
Flux (0.3-10 keV) (Observed)	4.7 (+4.6, -2.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.3 (+4.0, -2.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.08 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.47 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	5.71 (7)
Spectrum exposure	90 s