|RA:||04h 22m 54.71s||LC breaks:||0|
|Dec:||-25° 07′ 46.7′′||LC type:||No breaks|
This light curve comes from the light curve repository (if you use it, please cite Evans et al [2007, 2009]. Flares, marked by cross-hatched regions, are identified automatically, but may have been manually corrected. These are excluded from the fit. Any power-law breaks added to the fit must be required at the 3-σ level (according to an f-test) to be included in the best-fit. Details of all fits attempted are given below the plot. For more information see the light curve fitting documentation.
|1||33.3||8||Break significance <4-σ |
(25.39 % probability of chance improvement)
|2||26.3||6||Break significance <4-σ |
(40.72 % probability of chance improvement)
There are 1 flares excluded from the fit:
The best-fitting light curve has 0 breaks.
Click on the number of breaks in the table to the right to change which fit is plotted above and detailed below.
Currently showing the best fit.
|α1||1.201 (+0.106, -0.080)|
|Flux11hr||3.69e-14 erg cm-2 s-1|
Since there are no breaks in the light curve, only the time-averaged spectra are shown below. Times of flaring have not been removed, however this makes little difference to most spectra (see Fig 7/8c of Evans et al. 2009). For more information see the time-resolved spectroscopy documentation.
|NH (Galactic)||3.2 × 1020 cm-2|
|NH (intrinsic)||8.9 (+587.2, -8.9) × 1020 cm-2|
|z of absorber||6.7|
|Photon index||1.71 (+0.23, -0.15)|
|Flux (0.3-10 keV)|
|5.35 (+0.73, -0.76) × 10-13 erg cm-2 s-1|
|Flux (0.3-10 keV)|
|5.72 (+0.86, -0.57) × 10-13 erg cm-2 s-1|
|Counts to flux (obs)||4.1 × 10-11 erg cm-2 ct-1|
|Counts to flux (unabs)||4.4 × 10-11 erg cm-2 ct-1|
|C-stat (dof)||167.32 (198)|
|Exposure time||28.2 ks|
The plots below show the probability density functions of the temporal and time-averaged spectral parameters for all GRBs, with the data for GRB 080913 shown on in colour. Click the images for larger versions.
For all plots, the solid vertical lines mark the values for this GRB, and the dashed lines the 1-σ uncertainties. For α and Tb, the colour changes for each phase. For the spectral parameters, the WT fits are shown in blue and the PC in red. These figures correspond to Figs. 5,6, 7a and 8a of Evans et al. (2009). See the PDF documentation for more information.
|Temporal indices||Break Times||NH||Spectral indices|
The plots below show (α, β) scatter plots for each phase of all No breaks light curves. GRB 080913 is shown in colour; where multiple points appear in a given phase (e.g. WT and PC mode spectra for that phase), the different colours refer to different spectra. α and β are the temporal and spectral energy power-law indices respectively. The shaded regions mark those allowed by the standard closure relationships. These figures correspond to Fig. 10 of Evans et al. (2009). See the closure relationship documentation for more information.