Here we describe the file formats for the time-resolved spectroscopy available for most bursts detected with RXTE/PCA and BeppoSAX/WFC
The analysis procedures are described in Galloway et al. (2020)
RXTE/PCA
For the PCA bursts, the files are provided with 18 columns, space-separated. The columns are
- time (MET, s)
- average count rate within the bin (not corrected for the number of PCUs operating)
- estimated uncertainty on the count rate
- time bin size (s)
- neutral column density nH for the spectral fit (1e22 cm-2)
- lower uncertainty on nH (zero for fits in MINBAR DR1, as nH is fixed)
- upper uncertainty on nH (ditto)
- blackbody temperature kT (keV)
- 1-sigma lower limit on kT
- 1-sigma upper limit on kT
- blackbody normalisation ((Rkm/d10kpc)2)
- 1-sigma lower limit on blackbody normalisation
- 1-sigma upper limit on blackbody normalisation
- fit reduced chi2
- "raw" flux value (2.5-25 keV, erg/cm2/s)
- unabsorbed bolometric flux (1e-9 erg/cm2/s)
- 1-sigma lower limit on bolometric flux
- 1-sigma upper limit on bolometric flux
BeppoSAX/WFC
For the WFC bursts, steppar
in XSpec is used to determine the minimum and maximum bolometric fluxes over all
kT and blackbody normalisation values, with delta(chi2)<2.7. Then the flux solution is simply
determined by (min+max)/2 and the error by (max-min)/2.
The files have 10 columns as follows:
- MJD interval (formatted as F13:7-F13.7, e.g. 50286.2901948-50286.2902064)
- blackbody temperature kT (keV)
- 1-sigma error (symmetrical) on kT (keV)
- blackbody normalisation (Rkm/d10kpc)
- 1-sigma error (symmetrical) on blackbody normalisation
- "raw" flux value (3-25 keV, erg/cm2/s)
- 1-sigma error on "raw" flux
- unabsorbed bolometric flux (erg/cm2/s)
- 1-sigma error (symmetric) on bolometric flux, based on delta(chi2)=2.7 (erg/cm2/s)
- fit reduced chi2