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Swift-XRT spectra of GRB 250103B

Last updated after receiving ObsID 01278865002, version 23

Data were analysed using HEASOFT version 6.35.2

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The spectral fits assume a redshift: 1.416 (GCN 38820)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 154 to 49906 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+168 s

N_H (Galactic)	9.99 × 10¹⁹ cm^-2
N_H (intrinsic)	4 (+4, -3) × 10²¹ cm^-2
z of absorber	1.416
Photon index	4.2 (+0.8, -0.6)
Flux (0.3-10 keV) (Observed)	1.98 (+0.26, -0.24) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.8 (+3.3, -1.4) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.47 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.75 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	72.93 (87)
Spectrum exposure	31 s

PC mode. Mean photon arrival: T0+5368 s

N_H (Galactic)	9.99 × 10¹⁹ cm^-2
N_H (intrinsic)	0 (+1.59 × 10²¹, -0) cm^-2
z of absorber	1.416
Photon index	3.00 (+0.33, -0.28)
Flux (0.3-10 keV) (Observed)	1.02 (+0.17, -0.16) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.10 (+0.13, -0.17) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	2.57 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	2.77 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	83.47 (75)
Spectrum exposure	6.1 ks

Late Time spectrum (T0 + 16906 to 49906 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+38295 s

N_H (Galactic)	9.99 × 10¹⁹ cm^-2
N_H (intrinsic)	1.2 (+2.7, -1.2) × 10²³ cm^-2
z of absorber	1.416
Photon index	3.0 (+6.3, -2.9)
Flux (0.3-10 keV) (Observed)	1.14 (+2.71, -0.64) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7 (+43, -6) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	2.82 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.62 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	14.71 (13)
Spectrum exposure	5.5 ks