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Swift-XRT spectra of GRB 180402A

Last updated after receiving ObsID 00821103001, version 8

Data were analysed using HEASOFT version 6.29

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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)	4.08 (+1.19, -0.94) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.60 (+1.05, -0.90) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	6.08 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.86 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	80.34 (123)
Spectrum exposure	24 s

PC mode. Mean photon arrival: T0+750 s

N_H (Galactic)	2.94 × 10²¹ cm^-2
N_H (intrinsic)	9.1 (+23.2, -9.1) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.29 (+0.29, -0.25)
Flux (0.3-10 keV) (Observed)	6.5 (+1.2, -1.0) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.6 (+0.5, -0.9) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	6.01 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.02 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	150.07 (187)
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 (+3.4, -2.4) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.5 (+4.3, -2.4) × 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