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Swift-XRT spectra of GRB 110521A

Last updated after receiving ObsID 00453788000, version 15

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 104 to 47710 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+116 s

N_H (Galactic)	5.58 × 10²⁰ cm^-2
N_H (intrinsic)	5 (+6, -4) × 10²¹ cm^-2
z of absorber	0
Photon index	1.6 (+0.7, -0.6)
Flux (0.3-10 keV) (Observed)	3.43 (+1.34, -0.99) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.6 (+2.2, -1.0) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	4.53 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.06 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	67.42 (88)
Spectrum exposure	25 s

PC mode. Mean photon arrival: T0+1491 s

N_H (Galactic)	5.58 × 10²⁰ cm^-2
N_H (intrinsic)	3.1 (+3.1, -2.3) × 10²¹ cm^-2
z of absorber	0
Photon index	1.5 (+0.4, -0.4)
Flux (0.3-10 keV) (Observed)	1.43 (+0.37, -0.29) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.78 (+0.32, -0.27) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	5.10 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.34 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	115.70 (147)
Spectrum exposure	21.0 ks

Late Time spectrum (T0 + 4773 to 47710 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+16862 s

N_H (Galactic)	5.58 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+3.42 × 10²¹, -0) cm^-2
z of absorber	0
Photon index	1.70 (+1.27, -0.69)
Flux (0.3-10 keV) (Observed)	4.4 (+3.3, -2.4) × 10^-14 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.7 (+3.4, -2.2) × 10^-14 erg cm^-2 s^-1
Counts to flux (obs)	3.75 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.95 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	4.98 (10)
Spectrum exposure	19.6 ks