BHSPECBHSPEC is an additive table model for use with the Xspec spectral fitting package. It is comprised of a tabulation of artificial SEDs for disks accreting onto black holes. These SEDs were computed using the TLUSTY stellar atmospheres code.
Original Xspec table modelsThese table files were the first to be publicly released and are available via the Xspec website.
- bhspec.fits covers a spin (a/M) range from 0 to 0.8 for alpha 0.01 and 0.1.
- bhspec2.fits covers a larger range in spins (a/M from 0 to 0.99) but is tabulated only for alpha=0.01.
New Xspec table modelsThese table files are identical to the originals (above), but cover a wider range of parameter space in spin and mass.
- bhspec_spin_0.1.fits covers an extended spin (a/M) range from -1.0 to 0.8 for alpha=0.1 (log L/L_Edd from -2 to 0).
- bhspec_spin2_0.1.fits covers an extended spin (a/M) range from 0 to 0.99 for alpha=0.1 (log L/L_Edd from -2.0 to -0.5).
- bhspec_spin_0.01.fits covers an extended spin (a/M) range from -1.0 to 0.99 for alpha=0.01.
- bhspec_mass_0.1.fits covers an extended mass range from 3 to 300 solar masses for alpha=0.1.
- bhspec_mass_0.01.fits covers an extended mass range from 3 to 300 solar masses for alpha=0.01.
- bhspec_mean_0.1.fits mean stress prescription with alpha=0.1. See Done & Davis, 2008, ApJ, 683, 389 for description.
otherwise identical to those above (i.e. Kerr spacetime). Note that the mass
variable for these models is simply mass rather than log(mass), as it is in the
- bhspec_lowmass_0.01.fits covers log L/L_Edd from -2 to 0 and a/M from 0 to 0.5 for alpha=0.01
- bhspec_lowmass_0.1.fits covers log L/L_Edd from -1.7 to 0 and a/M from 0 to 0.5 for alpha=0.1
Referencing BHSPECIf these models are used for published research, Davis & Hubeny (2006) should be cited:
"A Grid of Relativistic, non-LTE Accretion Disk Models for Spectral Fitting of Black Hole Binaries"
Davis, S. W. & Hubeny, I. 2006, ApJS, 164, 530 [ADS]
BHSPEC Individual AnnuliBHSPEC disk SEDs are generated by integrating over radius using interpolation on a precomputed table of disk annuli: annuli.tar
A brief description of the annuli spectra: annuli.ps