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Plane-parallel shock with ion and electron temperatures.
XSpec model.
Plane-parallel shock plasma model with separate ion and electron
temperatures. This model is slow.
kTa provides a measure of the average energy per particle
(ions + electrons) and is constant throughout the post-shock flow in
plane shock models (Borkowski et al., 2001, ApJ, 548, 820). kTb should
always be less than kTa. If kTb exceeds kTa then their interpretations
are switched (i.e. the larger of kTa and kTb is always the mean
temperature).
Additional references for this model can be found in the help file for
the xsequil model ("ahelp xsequil").
xsnpshock Parameters
| 1 | kTa | ion shock
temperature in keV |
| 2 | kTb | electron
temperature immediately behind the shock front (keV) |
| 3 | Abundanc | metal
abundances (He fixed at cosmic). The elements included are C, N, O,
Ne, Mg, Si, S, Ca, Fe, Ni. Abundances are set by the xspecabundan
command. |
| 4 | Taul | lower limit on
ionization timescales (s/cm^3) to include |
| 5 | Tauu | upper limit on
ionization timescales (s/cm^3) to include |
| 6 | redshift | redshift,
z |
| 7 | norm | 10^-14 / (4 pi
(D_A*(1+z))^2) Int n_e n_H dV, where D_A is the angular size
distance to the source (cm), n_e is the electron density (cm^-3),
and n_H is the hydrogen density (cm^-3) |
This information is taken from the XSpec User's Guide. Version 11.3.1 of the XSpec
models is supplied with CIAO 3.2.
For a list of known bugs and issues with the XSPEC models, please visit the XSPEC bugs page.
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