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Swift-XRT spectra of GRB 150309A

Last updated after receiving ObsID 00634200005, version 6

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 137 to 45610 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+225 s

N_H (Galactic)	9.05 × 10²⁰ cm^-2
N_H (intrinsic)	1.33 (+0.28, -0.27) × 10²¹ cm^-2
z of absorber	0
Photon index	1.84 (+0.07, -0.07)
Flux (0.3-10 keV) (Observed)	6.08 (+0.26, -0.25) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.95 (+0.27, -0.26) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.82 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.00 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	553.46 (611)
Spectrum exposure	273 s

PC mode. Mean photon arrival: T0+10239 s

N_H (Galactic)	9.05 × 10²⁰ cm^-2
N_H (intrinsic)	2.1 (+0.5, -0.5) × 10²¹ cm^-2
z of absorber	0
Photon index	1.88 (+0.11, -0.11)
Flux (0.3-10 keV) (Observed)	7.8 (+0.5, -0.5) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.09 (+0.06, -0.06) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	3.99 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.57 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	404.13 (463)
Spectrum exposure	13.6 ks

Late Time spectrum (T0 + 4455 to 45610 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+13848 s

N_H (Galactic)	9.05 × 10²⁰ cm^-2
N_H (intrinsic)	2.2 (+0.6, -0.6) × 10²¹ cm^-2
z of absorber	0
Photon index	1.94 (+0.14, -0.13)
Flux (0.3-10 keV) (Observed)	5.0 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.2 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.88 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.58 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	344.23 (408)
Spectrum exposure	13.2 ks