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Swift-XRT spectra of GRB 120521B

Last updated after receiving ObsID 00522586005, 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 + 125 to 48231 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+134 s

N_H (Galactic)	3.65 × 10²¹ cm^-2
N_H (intrinsic)	2.21 (+1.22, -1.00) × 10²² cm^-2
z of absorber	0
Photon index	1.5 (+0.5, -0.5)
Flux (0.3-10 keV) (Observed)	6.7 (+1.5, -1.2) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.05 (+0.42, -0.20) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	8.01 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.27 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	107.83 (141)
Spectrum exposure	22 s

PC mode. Mean photon arrival: T0+6178 s

N_H (Galactic)	3.65 × 10²¹ cm^-2
N_H (intrinsic)	1.9 (+0.6, -0.5) × 10²² cm^-2
z of absorber	0
Photon index	2.0 (+0.3, -0.3)
Flux (0.3-10 keV) (Observed)	1.67 (+0.23, -0.20) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.69 (+1.45, -0.49) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	6.41 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	1.42 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	259.40 (251)
Spectrum exposure	21.1 ks

Late Time spectrum (T0 + 5375 to 48231 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+14166 s

N_H (Galactic)	3.65 × 10²¹ cm^-2
N_H (intrinsic)	1.9 (+0.8, -0.7) × 10²² cm^-2
z of absorber	0
Photon index	2.5 (+0.6, -0.5)
Flux (0.3-10 keV) (Observed)	5.7 (+1.3, -1.0) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.3 (+3.1, -0.7) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.96 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	2.00 × 10^-10 erg cm^-2 ct^-1
W-stat (dof) What's this?	109.74 (124)
Spectrum exposure	19.3 ks