Re: cooling

From: Yves Revaz <yves.revaz_at_epfl.ch>
Date: Mon, 28 Jul 2008 08:38:23 +0200

Dear Marie,

There is already a posting on the gadget list that may help :

http://www.mpa-garching.mpg.de/galform/gadget/gadget-list/0147.html
http://www.mpa-garching.mpg.de/galform/gadget/gadget-list/0148.html

For the implementation of the cooling, you simply have to compute
the Lambda function (cooling function) that is very clearly discribed in
Katz et al. 96.
You can also have a look at
http://adsabs.harvard.edu/abs/2007MNRAS.379..963M

Regards,

yves


Marie Schneider wrote:
> Dear Gadget2-Users,
>
> I am a "Gadget2 beginner" and I have read in the paper (Springel 2005) that
> " Radiative cooling and heating by photoionization has been implemented in GADGET-2 in a similar way as in Katz et al. (1996),
> i.e. the ionization balance of helium and hydrogen is computed in
> the presence of an externally specified time-dependent ultraviolet
> background under the assumption of collisional ionization equilib-
> rium. Yoshida et al. (2003) recently added a network for the non-
> equilibrium treatment of the primordial chemistry of nine species,
> allowing cooling by molecular hydrogen to be properly followed."
> .
> but the cooling does not seem to be included in the publc released version.
> Where can one find more details about the cooling implementation? Thanks a lot for your help.
>
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-- 
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  Yves Revaz
  Laboratory of Astrophysics EPFL
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Received on 2008-07-28 09:38:23

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