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Swift-XRT spectra of GRB 180411A

Last updated after receiving ObsID 00824451003, version 9

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 72 to 74350 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+116 s

N_H (Galactic)	8.31 × 10²¹ cm^-2
N_H (intrinsic)	9.9 (+1.8, -1.7) × 10²¹ cm^-2
z of absorber	0
Photon index	1.72 (+0.11, -0.11)
Flux (0.3-10 keV) (Observed)	3.20 (+0.14, -0.14) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.5 (+0.4, -0.3) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	6.41 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.10 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	729.37 (681)
Spectrum exposure	200 s

PC mode. Mean photon arrival: T0+20965 s

N_H (Galactic)	8.31 × 10²¹ cm^-2
N_H (intrinsic)	9.3 (+2.2, -2.0) × 10²¹ cm^-2
z of absorber	0
Photon index	1.86 (+0.14, -0.14)
Flux (0.3-10 keV) (Observed)	9.8 (+0.6, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.86 (+0.20, -0.17) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	6.13 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.16 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	543.34 (572)
Spectrum exposure	22.5 ks

Late Time spectrum (T0 + 4421 to 74350 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+24049 s

N_H (Galactic)	8.31 × 10²¹ cm^-2
N_H (intrinsic)	8.9 (+2.3, -2.2) × 10²¹ cm^-2
z of absorber	0
Photon index	1.81 (+0.15, -0.14)
Flux (0.3-10 keV) (Observed)	8.1 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.48 (+0.17, -0.13) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	6.25 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.13 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	518.12 (549)
Spectrum exposure	21.7 ks