xenial (1) gyotoy.1.gz

Provided by: yorick-gyoto_1.0.2-2ubuntu1_amd64 bug

NAME

       Gyotoy - visualize one geodesic in Kerr metric

SYNOPSIS

       gyotoy [input.xml]

DESCRIPTION

       Gyoto  is a framework for computing geodesics in curved space-times. The gyotoy utility program uses this
       framework to compute and display a single geodesic (the trajectory of a massive or mass-less particle) in
       Kerr metric.

       gyotoy  takes  as  optional  argument  a scenery description in XML format (input.xml). This scenery must
       contain a Astrobj section of kind Star. Alternatively, a default scenery is loaded.

       The user can then interactively select initial parameters and redraw the geodesic as many time as needed.
       the  Projection  parameters allow rotating the view and various menu entries are rather self-explanatory.
       Entries in the File menu allow saving the display as an image file,  saving  the  parameters  as  an  XML
       description, or saving the geodesic's coordinates in an ASCII file.

       gyotoy  is only a small utility to visualise a single geodesic. It can also be invoked from the yorick(1)
       prompt for building more complex graphics and for scripting. Have a look  at  the  gyoto.i  and  gyotoy.i
       files in yorick's Y_SITE directory.

       A  companion  program,  gyoto(1),  can be used to compute an entire Gyoto scenery using relativistic ray-
       tracing.

ENVIRONMENT

       GYOTO_PLUGINS
              The "Star" object in Gyoto is part of the  standard  plug-in.  If  the  GYOTO_PLUGINS  environment
              variable is set, it must contain at least "stdplug" for gyotoy to run properly.

AUTHOR

       Thibaut Paumard <thibaut.paumard@obspm.fr> wrote this manual.

SEE ALSO

       gyoto(1), yorick(1)