## Reflection of a blackbody from a constant density ionized accretion disk.These table models provide the reflection spectrum from a constant density disk illuminated by a blackbody, as in the case of an accreting neutron star system. They were computed using the same version of the Ross reflection code as the AGN constant density ionized disk models.Full details of the calculations can be found in Ballantyne (2004). The author (david.ballantyne -at- physics.gatech.edu) is more than happy to collaborate with observers to produce grids if the ones below are not appropriate for a certain observation/dataset. Model parameters are: - the LOG of the ionization parameter of the slab : Xi = 4 PI*F/n,
where F=incident flux (in ergs/s/cm**2) and n=hydrogen number
density of slab (cm**{-3}).
The models were calculated with log n= 15, and the flux was varied to change the ionization parameter. Valid range: 1.0 -> 3.75. Stepsize: 0.05 (in the log) - The temperature (kT) of incident blackbody in keV. Valid range: 1.0 -> 3.15. Stepsize: 0.05
- Reflection fraction, R. [For some table models] Model=Incident+R*Reflected.
This describes how strong the reflection component is in the model
spectrum. It is not necessarily related to the subtending solid angle of
the slab, as that depends on geometric assumptions.
Valid range: 0.0 -> 5.0. Stepsize: 0.05
NB: a separate blackbody will need to be included in the model definition when using grids that only include the reflection spectrum - Normalization.
As the model predicts flux per emitting area, this is a very small
number (about 1e-20 or less). See Cackett et al. (arXiv:0908.1098) for
more details.
- Redshift
Examples of usage:
In addition there are 2 table models that contain only reflection spectra and are likely for more specific purposes:
Keith Arnaud, Lab. for High Energy Astrophysics, NASA/Goddard Space Flight Center HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public Last modified: Tuesday, 13-Nov-2012 12:47:20 EST HEASARC support for unencrypted FTP access ended on September 20, 2019. Please see this notice for details. |