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Swift-XRT spectra of GRB 180618A

Last updated after receiving ObsID 00842475003, version 9

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 83 to 51487 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+186 s

N_H (Galactic)	4.44 × 10²⁰ cm^-2
N_H (intrinsic)	2.0 (+0.3, -0.3) × 10²¹ cm^-2
z of absorber	0
Photon index	1.88 (+0.08, -0.08)
Flux (0.3-10 keV) (Observed)	4.39 (+0.22, -0.21) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.92 (+0.23, -0.22) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.78 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.10 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	512.72 (537)
Spectrum exposure	293 s

PC mode. Mean photon arrival: T0+4619 s

N_H (Galactic)	4.44 × 10²⁰ cm^-2
N_H (intrinsic)	2.5 (+1.0, -0.8) × 10²¹ cm^-2
z of absorber	0
Photon index	2.22 (+0.25, -0.23)
Flux (0.3-10 keV) (Observed)	2.44 (+0.31, -0.27) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.0 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.28 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.44 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	229.43 (253)
Spectrum exposure	16.1 ks

Late Time spectrum (T0 + 5060 to 51487 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+21382 s

N_H (Galactic)	4.44 × 10²⁰ cm^-2
N_H (intrinsic)	1.9 (+2.4, -1.7) × 10²¹ cm^-2
z of absorber	0
Photon index	1.9 (+0.6, -0.5)
Flux (0.3-10 keV) (Observed)	3.19 (+1.22, -0.83) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.40 (+1.16, -0.78) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	3.76 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.19 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	67.41 (75)
Spectrum exposure	14.9 ks