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Swift-XRT spectra of GRB 250520A

Last updated after receiving ObsID 01315630004, version 11

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 147 to 50137 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+155 s

N_H (Galactic)	3.68 × 10²¹ cm^-2
N_H (intrinsic)	3.5 (+20.7, -3.5) × 10²¹ cm^-2
z of absorber	0
Photon index	0.71 (+1.24, -0.88)
Flux (0.3-10 keV) (Observed)	2.4 (+1.5, -1.1) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.6 (+1.8, -1.0) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	8.74 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	9.56 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	24.01 (32)
Spectrum exposure	16 s

PC mode. Mean photon arrival: T0+3935 s

N_H (Galactic)	3.68 × 10²¹ cm^-2
N_H (intrinsic)	1.0 (+0.6, -0.4) × 10²² cm^-2
z of absorber	0
Photon index	2.2 (+0.5, -0.4)
Flux (0.3-10 keV) (Observed)	1.80 (+0.35, -0.29) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.2 (+3.1, -1.1) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	5.00 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.17 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	154.86 (164)
Spectrum exposure	8.9 ks

Late Time spectrum (T0 + 16701 to 50137 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+23614 s

N_H (Galactic)	3.68 × 10²¹ cm^-2
N_H (intrinsic)	1.7 (+3.3, -1.7) × 10²² cm^-2
z of absorber	0
Photon index	2.6 (+2.2, -1.5)
Flux (0.3-10 keV) (Observed)	2.9 (+2.1, -1.1) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.28 (+23.21, -0.80) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.48 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.99 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	30.15 (28)
Spectrum exposure	7.7 ks