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Table 7: Functions accepted by spf for the parameter SPF_MODEL
| Function |
Description |
| PLAW(i,j) |
Simple power-law photon spectrum |
| BKNP(i,j,k,l) |
Broken power-law |
| HENC(i,j) |
High-energy cut-off (exponential) |
| BREM(i,j) |
Thermal bremsstrahlung spectrum |
| COMP(i,j) |
Comptonisation factor for bremsstrahlung |
| BBOD(i,j) |
Black-body spectrum |
| RSMT(i,j,k) |
Raymond-Smith emission spectrum |
| MEWE(i,j,k) |
Mewe & Gronenschild emission spectrum |
| ABSO(i) |
Photoelectric absorption by interstellar medium using
Morrison & McCammon cross-sections |
| ABSI(i) |
As ABSO, but redshifted |
| IRCO(i) |
Cold iron absorption (7.11 keV edge) |
| IRHE(i) |
He-like iron absorption (8.85 keV edge) |
| IRHY(i) |
H-like iron absorption (9.29 keV edge) |
| KEDG(i,j) |
K absorption edge |
| GTRA(i) |
Scattering by interstellar grains |
| GSCA(i) |
Complementary to GTRA |
| LINE(i,j) |
Narrow Gaussian line (intrinsic width < 0.1 keV). |
| BLIN(i,j,k) |
Broad Gaussian line |
| CFRA(i) |
Partial covering fraction absorption |
| UFRA(i) |
Complementary to CFRA |
| POLY(i,j,k,l) |
Polytropic gas distribution model |
| COMA(i,j,k) |
Hughes Coma/Polytropic model for on-axis Ginga
pointing |
| GABS(i,j) |
Absorption due to Gaussian distribution of absorbers |
| LABS(i) |
Absorption due to power-law distribution of absorbers |
| PABS(i,j) |
Absorption due to Poissonian distribution of clouds |
| PLEM(i,j,k) |
Power-law distribution of emission measures |
| TABn(i,j,n) |
Table model with n (equal to 0, 1 or 2) parameters |
The variables i, j, etc. are described in the spf documentation.
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