rnei, vrnei, vvrnei, brnei, bvrnei, bvvrnei: non-equilibrium recombining collisional plasma

Non-equilibrium ionization collisional plasma model. This is a model for a recombining plasma where the plasma is assumed to have started in collisional equilibrium with the initial temperature given by the relevant input parameter. This model will only work for xset neivers 3.0 and above. Additional xset options are available and are listed under the documentation for nei.

For the rnei model the parameters are:

par1	Plasma temperature (keV)
par2	Initial plasma temperature (keV)
par3	Metal abundances (He fixed at that defined by the abund command). The elements included are C, N, O, Ne, Mg, Si, S, Ar, Ca, Fe, Ni. Abundances are defined by the abund command
par4	Ionization timescale in units of s/cm$^3$.
par5	redshift
norm	${10^{-14}\over{4\pi[D_A(1+z)]^2}}\int n_en_HdV$, where $D_A$ is the angular diameter distance to the source (cm), $dV$ is the volume element (cm$^3$), and $n_e$ and $n_H$ are the electron and H densities (cm$^{-3}$), respectively

For the vrnei model, the parameters are:

par1	Plasma temperature (keV)
par2	Initial plasma temperature (keV)
par3	H abundance (set to 0 for no free-free continuum, otherwise 1)
par4–par15	Abundances for He, C, N, O, Ne, Mg, Si, S, Ar, Ca, Fe, Ni wrt Solar (defined by the abund command)
par16	Ionization timescale in units of s/cm$^3$.
par17	Redshift, z
norm	${10^{-14}\over{4\pi[D_A(1+z)]^2}}\int n_en_HdV$, where $D_A$ is the angular diameter distance to the source (cm), $dV$ is the volume element (cm$^3$), and $n_e$ and $n_H$ are the electron and H densities (cm$^{-3}$), respectively

For the vvrnei model, the parameters are:

par1	Plasma temperature (keV)
par2	Initial plasma temperature (keV)
par3	H abundance (set to 0 for no free-free continuum, otherwise 1)
par4–par32	Abundances for all elements with 2 $\leq$ Z $\leq$ 30 wrt Solar (defined by the abund command)
par33	Ionization timescale in units of s/cm$^3$.
par34	Redshift, z
norm	${10^{-14}\over{4\pi[D_A(1+z)]^2}}\int n_en_HdV$, where $D_A$ is the angular diameter distance to the source (cm), $dV$ is the volume element (cm$^3$), and $n_e$ and $n_H$ are the electron and H densities (cm$^{-3}$), respectively

For the brnei model the parameters are:

par1	Plasma temperature (keV)
par2	Initial plasma temperature (keV)
par3	Metal abundances (He fixed at that defined by the abund command). The elements included are C, N, O, Ne, Mg, Si, S, Ar, Ca, Fe, Ni. Abundances are defined by the abund command
par4	Ionization timescale in units of s/cm$^3$.
par5	redshift
par6	gaussian velocity broadening (sigma in km/s)
norm	${10^{-14}\over{4\pi[D_A(1+z)]^2}}\int n_en_HdV$, where $D_A$ is the angular diameter distance to the source (cm), $dV$ is the volume element (cm$^3$), and $n_e$ and $n_H$ are the electron and H densities (cm$^{-3}$), respectively

For the bvrnei model, the parameters are:

par1	Plasma temperature (keV)
par2	Initial plasma temperature (keV)
par3	H abundance (set to 0 for no free-free continuum, otherwise 1)
par4–par15	Abundances for He, C, N, O, Ne, Mg, Si, S, Ar, Ca, Fe, Ni wrt Solar (defined by the abund command)
par16	Ionization timescale in units of s/cm$^3$.
par17	Redshift, z
par18	gaussian velocity broadening (sigma in km/s)
norm	${10^{-14}\over{4\pi[D_A(1+z)]^2}}\int n_en_HdV$, where $D_A$ is the angular diameter distance to the source (cm), $dV$ is the volume element (cm$^3$), and $n_e$ and $n_H$ are the electron and H densities (cm$^{-3}$), respectively

Finally, for the bvvrnei model, the parameters are:

par1	Plasma temperature (keV)
par2	Initial plasma temperature (keV)
par3	H abundance (set to 0 for no free-free continuum, otherwise 1)
par4–par32	Abundances for all elements with 2 $\leq$ Z $\leq$ 30 wrt Solar (defined by the abund command)
par33	Ionization timescale in units of s/cm$^3$.
par34	Redshift, z
par35	gaussian velocity broadening (sigma in km/s)
norm	${10^{-14}\over{4\pi[D_A(1+z)]^2}}\int n_en_HdV$, where $D_A$ is the angular diameter distance to the source (cm), $dV$ is the volume element (cm$^3$), and $n_e$ and $n_H$ are the electron and H densities (cm$^{-3}$), respectively

HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public

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