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Swift-XRT spectra of GRB 121001A

Last updated after receiving ObsID 00535026001, version 7.

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Time-averaged spectrum (T0 + 127 to 59555 s)

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WT and PC mode spectra of GRB 121001A

WT mode. Mean photon arrival: T0+170 s

NH (Galactic)5.97 × 1021 cm-2
NH (intrinsic)7 (+6, -5) × 1021 cm-2
z of absorber0
Photon index1.2 (+0.4, -0.3)
Flux (0.3-10 keV)
(Observed)
5.4 (+0.9, -0.8) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
7.00 (+1.55, -0.77) × 10-10 erg cm-2 s-1
Counts to flux (obs)7.26 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)9.34 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
171.63 (263)
Spectrum exposure93 s

PC mode. Mean photon arrival: T0+3129 s

NH (Galactic)5.97 × 1021 cm-2
NH (intrinsic)7 (+5, -4) × 1021 cm-2
z of absorber0
Photon index1.27 (+0.29, -0.26)
Flux (0.3-10 keV)
(Observed)
1.05 (+0.14, -0.12) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.38 (+0.17, -0.13) × 10-11 erg cm-2 s-1
Counts to flux (obs)7.81 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.02 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
265.36 (325)
Spectrum exposure9.1 ks

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Late Time spectrum (T0 + 5165 to 59555 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+8646 s

NH (Galactic)5.97 × 1021 cm-2
NH (intrinsic)7 (+8, -6) × 1021 cm-2
z of absorber0
Photon index1.5 (+0.5, -0.4)
Flux (0.3-10 keV)
(Observed)
1.5 (+0.4, -0.3) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.2 (+0.7, -0.4) × 10-12 erg cm-2 s-1
Counts to flux (obs)6.72 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)9.65 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
96.13 (122)
Spectrum exposure7.4 ks

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