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Swift-XRT spectra of GRB 080721

Last updated after receiving ObsID 00317508016, version 18

Data were analysed using HEASOFT version 6.32

About these products.

Get another burst.

Add time-sliced spectrum.

The spectral fits assume a redshift: 2.6 (GCN 7997)

Non-standard pipeline processing was used to produce these data. The 'pointing accuracy' requirement was relaxed very slightly.

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 113 to 122563 s)

Download spectral files for Time-averaged spectrum.

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+547 s

N_H (Galactic)	9.27 × 10²⁰ cm^-2
N_H (intrinsic)	6.4 (+0.9, -0.9) × 10²¹ cm^-2
z of absorber	2.6
Photon index	1.713 (+0.015, -0.015)
Flux (0.3-10 keV) (Observed)	2.035 (+0.022, -0.022) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.380 (+0.020, -0.020) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.85 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.50 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	901.26 (851)
Spectrum exposure	1.3 ks

PC mode. Mean photon arrival: T0+26199 s

N_H (Galactic)	9.27 × 10²⁰ cm^-2
N_H (intrinsic)	8.1 (+3.0, -2.9) × 10²¹ cm^-2
z of absorber	2.6
Photon index	1.83 (+0.05, -0.05)
Flux (0.3-10 keV) (Observed)	1.55 (+0.06, -0.05) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.88 (+0.05, -0.05) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.71 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.50 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	562.32 (614)
Spectrum exposure	32.6 ks

Late Time spectrum (T0 + 4569 to 122563 s)

Download spectral files for Late Time spectrum.

Plots to download

PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+26199 s

N_H (Galactic)	9.27 × 10²⁰ cm^-2
N_H (intrinsic)	8.1 (+3.0, -2.9) × 10²¹ cm^-2
z of absorber	2.6
Photon index	1.83 (+0.05, -0.05)
Flux (0.3-10 keV) (Observed)	1.55 (+0.06, -0.05) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.88 (+0.05, -0.05) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.71 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.50 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	562.32 (614)
Spectrum exposure	32.6 ks