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mkcflow, vmcflow:  cooling flow, mekal

A cooling flow model after Mushotzky & Szymkowiak (Cooling Flows in Clusters and Galaxies ed. A. C. Fabian, 1988). This one uses the mekal (or vmekal) model for the individual temperature components and differs from cflow in setting the emissivity function to be the inverse of the bolometric luminosity. Abundance ratios are set by the abund command. Redshift is converted to distance using the cosmology set by the cosmo command. The switch parameter determines whether the mekal code will be run to calculate the model spectrum for each temperature or whether the model spectrum will be interpolated from a pre-calculated table. The former is slower but more accurate.

 

For the mkcflow model the parameters are:

 

par1

low temperature (keV)

par2

high temperature (keV)

par3

abundance relative to Solar

par4

(fixed) redshift

par5

 0 arrow right   calculate

 1 arrow right   interpolate

 2    interpolate using APEC model

norm

Mass accretion rate (solar mass/yr)

 

While for the vmcflow variant the parameters are:

 

par1

low temperature (keV)

par2

high temperature (keV)

par3-par16

Abundances for He, C, N, O, Ne, Na, Mg, Al, Si, S, Ar, Ca, Fe, Ni wrt Solar (given by the Anders & Grevesse mixture)

par17

Redshift

par18

 0 arrow right   calculate

 1 arrow right   interpolate

 2    interpolate using APEC model

norm

Mass accretion rate (solar mass/yr)

 

next up previous contents
Next: Nei Up: Additive Model Components Previous: Mekal