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Swift-XRT spectra of GRB 230818A

Last updated after receiving ObsID 01186032002, version 30

Data were analysed using HEASOFT version 6.32

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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 (+2.27 × 10²¹, -0) cm^-2
z of absorber	0
Photon index	1.40 (+0.43, -0.21)
Flux (0.3-10 keV) (Observed)	2.3 (+0.5, -0.5) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.6 (+0.5, -0.5) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	4.34 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.76 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	102.16 (135)
Spectrum exposure	41 s

PC mode. Mean photon arrival: T0+8966 s

N_H (Galactic)	1.13 × 10²¹ cm^-2
N_H (intrinsic)	9 (+8, -7) × 10²⁰ cm^-2
z of absorber	0
Photon index	2.00 (+0.22, -0.20)
Flux (0.3-10 keV) (Observed)	2.9 (+0.4, -0.3) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.0 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.51 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.84 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	227.65 (253)
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+23482 s

N_H (Galactic)	1.13 × 10²¹ cm^-2
N_H (intrinsic)	2.3 (+1.7, -1.4) × 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)	1.63 (+1.06, -0.30) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	2.75 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.51 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	106.44 (121)
Spectrum exposure	9.5 ks