Software Index
Related Topics
Popular Trends
Trending Topics
Linux Software Home & Leisure  


download download home home   report broken
important software information
company name:
Dave Strickland
license: Freeware
minimum requirements: No special requirements.
functional limitations:
coolcurve_create description

coolcurve_create project contains cooling curves (emissivities) for hydrodynamical simulations from XSPEC.

ccurve_create.tcl is a TCL script (plus associated csh-scripts) that make it is possible to calculate cooling curves (plasma emissivities, in units of erg cm^3 s^-1) as a function of plasma temperature using the hot plasma codes available in the XSPEC spectral fitting program. The ability to control the metal abundances in XSPEC, in particular the relative element abundances (e.g. alpha-elements to iron) and absolute abundances (with respect to hydrogen) is particularly useful for simulations considering metal-enrichment or chemically-different plasmas. Element-specific cooling functions can also be created.

These can be used in hydrodynamical simulations to assess the total cooling rate, calculate the luminosity in a specific wavelength/energy range, or more generally to calculate X-ray or UV line diagnostics.

These cooling function are equivalent to the cooling functions presented by Sutherland & Dopita (1993) or Orly & Gnat (2007), although they do not in any sense replace them.

These functions will be of most use if you wish to quickly and cheaply assess the X-ray luminosity of a hot plasma in a simulation (rather than calculating it post-facto after the simulation is completed), as the majority of the hot plasma codes available in XSPEC are best suited to X-ray emission, in particular conditions of collisional ionization equilibrium (CIE). This code and method is well-suited to line-or-ion specific cooling functions, e.g. the emission at E~6.7 keV from Fe XXV, or the O VI doublet at 1032 and 1038 Angstroms.

However bolometric cooling functions can still be calculated, in particular with the MEKAL plasma code (as it was designed to calculate FUV/EUV emission in addition to X-ray emission). The CIE bolometric emissivities will be larger than the NIE cooling rates, as you will find out if you compare the CIE emissivities to the Sutherland and Dopita NIE cooling function.

To calculate luminosities from these emissivities multiply by n_e * n_H * V, NOT n_tot**2 * V, where n_e is the electron number density (in cm^-3), n_H the proton number density and V the region volume (cm^3).. . Publisher of coolcurve_create, Author of coolcurve_create 1.00. coolcurve_create project contains cooling curves (emissivities) for hydrodynamical simulations from XSPEC. ccurve_create.tcl is a TCL script (plus associated csh-scripts) that make it is pos

Function - Simulations - Number - Functions - Simulation - Calculate - Metal - Density - Plasma - Particular - Specific - Emission - These - Cooling - Coolcurve Create - Publisher Of Coolcurve Create - Author Of Coolcurve Create 1 00 - Emissivities - Xspec - Abundances - Bolometric - Suited - Sutherland
Similar software
coords (Popularity: ) : coords is a planetarium program. The project is still under construction, but it does a good job of showing the sky with stars and planets at the correct positions.

This version shows celestial objects from the Yale BSC and NGC2000 catalogs, ...

Celestia (Popularity: ) : Celestia is a free real-time space simulation that lets you experience our universe in three dimensions.

Unlike most planetarium software, Celestia doesn\'t confine you to the surface of the Earth. You can travel throughout the solar system, to any of over ...

User reviews

Write a review:
1 2 3 4 5 6 7 8 9 10
1=poor 10=excellent
Write review*
Your name*
  (Comments are moderated, and will not appear on this site until the editor has approved them)

Rate me
supported os's
downloads 24
version 1.00
size in Kb 31
user rating 5/10
our rating 0 Stars
share info
Recommend coolcurve_create
Report spyware
New Software
Popular Software
Latest Reviews