WUGRAV Movie page


Simulations of neutron star binaries



Long term evolution of neutron star binary solving the full Einstein equations coupled to the general relativistic hydrodynamic (GRHydro) equations.

The neutron stars are described by a gamma=2 polytropic equation of state. The evolution begins at a late stage in their long inspiral to coalescence driven by gravitational radiation (initially they are in a quasi equilibrium orbit with a relative separation of ra=0.25, proper separation of 61.3km).



MPEG format (9.5 MB)
 Quicktime format (3 MB)



Possible critical phenomena in head-on collisions.
 Click on this image for simulations investigating the existence of critical phenomena in head-on collisions of neutron stars.
Click on this image for earlier simulations of neutron star binaries.

Some oldies but goodies




A gravitational plane wave hitting a neutron star.
Evolution of two spatial derivatives of the metric gxx (d^2 gxx / dz^2).


ns_pw1.mov SGI format (1.3Mb)


ns_pw2.mov SGI format (1.1Mb)
ns_pw2.qt Quicktime format (4.0Mb)


ns_pw3.mov SGI format (2.4Mb)
ns_pw3.qt Quicktime format (5.6Mb)


arrows.qt (File size 5.4Mb)


isoline.qt (File size 7.6Mb)
The AVS module file used to create this, IsoLineVector.v


ortho.qt (File size 10.5Mb)


twoiso.qt (File size 6.6Mb bytes)
The AVS module file used to create this, TwoIsoSurfaces.v


glancing_iso.qt(File size 2.8Mb)


OrthoGlancing.qt (File size 1.1Mb bytes)
The AVS module file used to create this, OrthoMovie.v


nsns_newt.qt (File size 3.0Mb bytes)


DensEngy.qt (File size 845k)
The AVS module file used to create this, DensEngy.v


A neutron star moving across the plane showing the metric.
There is no shift applied to this metric.


NoShiftLowRes.mov Quicktime format (.6Mb)


The same neutron star as above.
This time there is a shift on the metric, but the colormap is the same as before.


YesShiftLowRes.mov Quicktime format (2.0Mb)


Again the same neutron star as the above two.
There is a shoft applied and the arrows show the velocity of the shift, and the colormap is for the arrows.


YesShiftwArLowRes.mov Quicktime format (2.4Mb)


Two Neutron Stars colliding Head On.
The eps is colormapped onto rho with the lapse shown below.


lapseLowRes.mov Quicktime format (1.0Mb)


Neutron Star Inspiral Coalescence
This is an orthoslice of the log of rho.


GRInspiral.mov Quicktime format (2.5Mb)