coolflow, vcoolflow, bcoolflow, bvcoolflow: cooling flow, mekal

A cooling flow model after Mushotzky & Szymkowiak (1988). This one 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 spectrum is calculated by running the mekal code, by interpolating on a pre-calculated mekal table, using the AtomDB data, or using the SPEX data. If the last two of these options are selected then see the documentation on the cie model for a list of the xset options which can be used to change the behaviour of the code.

Velocity broadening can only be used with switch=2 or switch=3.

For the coolflow model the parameters are:

par1	low temperature (keV)
par2	high temperature (keV)
par3	abundance relative to Solar
par4	redshift
par5	switch (0 = calculate using mekal, 1 = interpolate using mekal, 2 = use AtomDB data), 3 = SPEX data
norm	Mass accretion rate (solar mass/yr)

For the vcoolflow 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
par17	Redshift
par18	switch (0 = calculate using mekal, 1 = interpolate using mekal, 2 = use AtomDB data, 3 = SPEX data)
norm	Mass accretion rate (solar mass/yr)

For the bcoolflow model the parameters are:

par1	low temperature (keV)
par2	high temperature (keV)
par3	abundance relative to Solar
par4	redshift
par5	gaussian sigma for velocity broadening (km/s) (switch=2 or 3 only)
par6	switch (0 = calculate using mekal, 1 = interpolate using mekal, 2 = use AtomDB data, 3 = SPEX data)
norm	Mass accretion rate (solar mass/yr)

For the bvcoolflow 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
par17	Redshift
par18	gaussian sigma for velocity broadening (km/s) (switch=2 or 3 only)
par19	switch (0 = calculate using mekal, 1 = interpolate using mekal, 2 = use AtomDB data, 3 = SPEX data)
norm	Mass accretion rate (solar mass/yr)

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Last modified: Friday, 23-Aug-2024 13:20:40 EDT