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Swift-XRT spectra of GRB 230818A

Last updated after receiving ObsID 01186032002, version 30

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 144 to 68321 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+161 s

N_H (Galactic)	1.13 × 10²¹ cm^-2
N_H (intrinsic)	0 (+2.10 × 10²¹, -0) cm^-2
z of absorber	0
Photon index	1.34 (+0.45, -0.20)
Flux (0.3-10 keV) (Observed)	2.3 (+0.5, -0.6) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.5 (+0.5, -0.5) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	4.58 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.99 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	100.51 (134)
Spectrum exposure	41 s

PC mode. Mean photon arrival: T0+8364 s

N_H (Galactic)	1.13 × 10²¹ cm^-2
N_H (intrinsic)	4 (+7, -4) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.81 (+0.19, -0.18)
Flux (0.3-10 keV) (Observed)	3.5 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.3 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.92 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.83 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	259.00 (287)
Spectrum exposure	10.9 ks

Late Time spectrum (T0 + 4789 to 68321 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+24570 s

N_H (Galactic)	1.13 × 10²¹ cm^-2
N_H (intrinsic)	2.6 (+1.8, -1.5) × 10²¹ cm^-2
z of absorber	0
Photon index	2.7 (+0.5, -0.4)
Flux (0.3-10 keV) (Observed)	6.9 (+1.5, -1.2) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.71 (+2.31, -0.31) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	2.81 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.91 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	106.25 (121)
Spectrum exposure	9.5 ks