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Swift-XRT spectra of GRB 210421A

Last updated after receiving ObsID 01044426002, version 10

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 91 to 23100 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+127 s

N_H (Galactic)	4.63 × 10²¹ cm^-2
N_H (intrinsic)	7 (+4, -3) × 10²⁰ cm^-2
z of absorber	0
Photon index	2.70 (+0.08, -0.08)
Flux (0.3-10 keV) (Observed)	1.54 (+0.05, -0.05) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.4 (+0.4, -0.3) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	2.91 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.32 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	484.24 (539)
Spectrum exposure	130 s

PC mode. Mean photon arrival: T0+6278 s

N_H (Galactic)	4.63 × 10²¹ cm^-2
N_H (intrinsic)	0 (+8.04 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	2.16 (+0.20, -0.14)
Flux (0.3-10 keV) (Observed)	3.5 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.1 (+0.8, -0.5) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.77 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.68 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	218.70 (205)
Spectrum exposure	5.6 ks

Late Time spectrum (T0 + 5132 to 23100 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+13299 s

N_H (Galactic)	4.63 × 10²¹ cm^-2
N_H (intrinsic)	9.0 (+24.5, -9.0) × 10²⁰ cm^-2
z of absorber	0
Photon index	2.3 (+0.5, -0.4)
Flux (0.3-10 keV) (Observed)	1.46 (+0.34, -0.27) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.09 (+1.63, -0.54) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.56 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.54 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	109.75 (112)
Spectrum exposure	5.0 ks