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Swift-XRT spectra of GRB 180331A

Last updated after receiving ObsID 00820347002, version 5

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 115 to 33580 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+147 s

N_H (Galactic)	2.85 × 10²¹ cm^-2
N_H (intrinsic)	1.0 (+2.5, -1.0) × 10²¹ cm^-2
z of absorber	0
Photon index	1.05 (+0.26, -0.23)
Flux (0.3-10 keV) (Observed)	4.3 (+0.7, -0.6) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.8 (+0.6, -0.5) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	6.47 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.20 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	207.17 (299)
Spectrum exposure	70 s

PC mode. Mean photon arrival: T0+683 s

N_H (Galactic)	2.85 × 10²¹ cm^-2
N_H (intrinsic)	8.9 (+14.6, -8.9) × 10²⁰ cm^-2
z of absorber	0
Photon index	1.20 (+0.19, -0.18)
Flux (0.3-10 keV) (Observed)	1.75 (+0.22, -0.19) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.00 (+0.19, -0.18) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	6.34 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.25 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	264.64 (330)
Spectrum exposure	5.1 ks

Late Time spectrum (T0 + 4632 to 33580 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+20381 s

N_H (Galactic)	2.85 × 10²¹ cm^-2
N_H (intrinsic)	0 (+1.62 × 10²², -0) cm^-2
z of absorber	0
Photon index	2.0 (+2.0, -1.0)
Flux (0.3-10 keV) (Observed)	9 (+8, -6) × 10^-14 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.13 (+1.01, -0.70) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	3.69 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.72 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	6.94 (4)
Spectrum exposure	4.0 ks