Rapidly Rotating Neutron Star
RNS is a code written by Nikolaos
Stergioulas which constructs models of rapidly
rotating, relativistic, compact stars using tabulated equations of
state which are supplied by the user.
Please direct questions about this program to either
Sharon Morsink
or
Nikolaos Stergioulas.
Description
The code is based on the method developed by
Komatsu, Eriguchi & Hachisu (1989) and modifications introduced by
Cook, Shapiro & Teukolsky (1994). It can compute individual models as well as sequences
of fixed mass, rest mass, angular velocity or angular momentum models. All models
assume uniform rotation. You can read more about this code in
Stergioulas and Friedman (1995) and in
Nozawa, Stergioulas, Gourgoulhon & Eriguchi (1998) and references therein.
A list of publications which use the rns code is available.
Sources
-
Version 1 This version
of the code is best for users who simply wish to input an
equation of state and a parameter (such as
angular velocity, mass, etc.)
and have the computer output a list of the
star's properties.
-
Version 2 This version of
the code is more suitable if you wish to use the results (such
as the metric) in another application.
The code is modularized so that it is
fairly easy to call up from other programs. An example program is included.
(Please email Sharon Morsink
with suggestions which will make this more user friendly.)
-
A tarred gzip file
of nuclear equation of state files are available. An index to the
available EOS files is included.
-
The code, makefile, equation of state files and
user's manual are available for download.
HTML User Manual
Thanks .....
- Greg Cook - for supplying some equations of state files
- Shai Ayal - for pointing out an error in a previous version of 2.0
