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Swift-XRT spectra of GRB 180402A

Last updated after receiving ObsID 00821103001, version 8

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 83 to 18278 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+95 s

N_H (Galactic)	2.94 × 10²¹ cm^-2
N_H (intrinsic)	1.2 (+5.2, -1.2) × 10²¹ cm^-2
z of absorber	0
Photon index	1.1 (+0.5, -0.4)
Flux (0.3-10 keV) (Observed)	4.12 (+1.20, -0.95) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.65 (+1.06, -0.91) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	6.07 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.85 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	80.15 (123)
Spectrum exposure	24 s

PC mode. Mean photon arrival: T0+765 s

N_H (Galactic)	2.94 × 10²¹ cm^-2
N_H (intrinsic)	9.8 (+24.3, -9.8) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.27 (+0.29, -0.25)
Flux (0.3-10 keV) (Observed)	6.21 (+1.16, -0.98) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.24 (+1.02, -0.90) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	6.07 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.08 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	143.49 (185)
Spectrum exposure	5.4 ks

Late Time spectrum (T0 + 4319 to 18278 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+7736 s

N_H (Galactic)	2.94 × 10²¹ cm^-2
N_H (intrinsic)	0 (+9.13 × 10²¹, -0) cm^-2
z of absorber	0
Photon index	0.55 (+1.02, -0.79)
Flux (0.3-10 keV) (Observed)	4.4 (+3.3, -2.4) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.5 (+4.2, -2.2) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	9.90 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.02 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	19.92 (11)
Spectrum exposure	4.4 ks