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Swift-XRT spectra of GRB 210509A

Last updated after receiving ObsID 01047531004, version 9

Data were analysed using HEASOFT version 6.29

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Add time-sliced spectrum.

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 3209 to 27477 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+6922 s

N_H (Galactic)	7.11 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+8.50 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	1.63 (+0.36, -0.15)
Flux (0.3-10 keV) (Observed)	1.55 (+0.27, -0.32) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.71 (+0.27, -0.33) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.98 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.39 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	106.92 (113)
Spectrum exposure	4.7 ks

Late Time spectrum (T0 + 4001 to 27477 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+8650 s

N_H (Galactic)	7.11 × 10²⁰ cm^-2
N_H (intrinsic)	4.2 (+138.7, -4.2) × 10¹⁹ cm^-2
z of absorber	0
Photon index	1.71 (+0.45, -0.26)
Flux (0.3-10 keV) (Observed)	1.21 (+0.29, -0.29) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.35 (+0.31, -0.26) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.84 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.29 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	63.69 (76)
Spectrum exposure	3.9 ks