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Swift-XRT spectra of GRB 240421B

Last updated after receiving ObsID 01223470002, version 27

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 129 to 36022 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+149 s

N_H (Galactic)	1.24 × 10²¹ cm^-2
N_H (intrinsic)	4.6 (+3.0, -2.2) × 10²¹ cm^-2
z of absorber	0
Photon index	2.2 (+0.5, -0.4)
Flux (0.3-10 keV) (Observed)	2.4 (+0.6, -0.5) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.69 (+2.36, -0.75) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.57 × 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?	126.10 (163)
Spectrum exposure	42 s

PC mode. Mean photon arrival: T0+8047 s

N_H (Galactic)	1.24 × 10²¹ cm^-2
N_H (intrinsic)	5.2 (+1.0, -0.9) × 10²¹ cm^-2
z of absorber	0
Photon index	1.84 (+0.13, -0.13)
Flux (0.3-10 keV) (Observed)	2.24 (+0.16, -0.15) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.46 (+0.26, -0.23) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.86 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.51 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	386.69 (461)
Spectrum exposure	6.5 ks

Late Time spectrum (T0 + 5731 to 36022 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+13079 s

N_H (Galactic)	1.24 × 10²¹ cm^-2
N_H (intrinsic)	5.0 (+1.3, -1.1) × 10²¹ cm^-2
z of absorber	0
Photon index	1.89 (+0.18, -0.17)
Flux (0.3-10 keV) (Observed)	1.115 (+0.106, -0.096) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.76 (+0.20, -0.16) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.67 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.39 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	283.29 (371)
Spectrum exposure	4.8 ks