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3-D Newtonian hydrodynamics code applied on newly born neutron star reveals the charactestics of chilled universe below the Hyperspace - the gravitational radiation
3-D Newtonian hydrodynamics code applied on newly born neutron star reveals the charactestics of chilled universe below the Hyperspace - the gravitational radiation.
The chilled universe that forms the base or platform for all Hyperspaces has one thing we know - the gravitational radiation. Scientists are trying get a feel for that ellusive gravitational radiation.
In putting together an accurate computational model to simulate neutron stars, the researchers began with previous predictions and what is already known. Even in the exotic conditions of massive newborn neutron stars, researchers believe these stars behave like a fluid that can be reasonably well described by the same classical equations used to describe the motion of air and ocean currents on Earth, but with the added importance of gravity.
The researchers use a 3-D Newtonian hydrodynamics code to which they have added the effects of Einstein’s equations with the back reaction of the gravitational radiation. That’s the extra force you wouldn’t find on the Earth or the Sun. And since gravity is important, at every time step we have to solve the gravitational potential equation, which is very computationally intensive, requiring supercomputers.
The simulation code solves the full nonlinear gravitational hydrodynamics equations in a rotating reference frame using a computational algorithm developed by astrophysicists to study a variety of astrophysical problems.
In brief, the code performs an explicit time integration of the equations, using a finite-difference technique that is accurate to second order in both space and time. The code was written in Fortran 90 using the MPI parallel library and run on NPACI’s Hewlett-Packard V2500 at the Center for Advanced Computing Research at Caltech. From the simulation results the researchers have produced a movie that shows the final stages of the nonlinear evolution of the stellar model.
Looking ahead, the researchers are planning to extend the model by including more physics such as buoyancy forces and eventually magnetism, in order to simulate neutron stars even more realistically.
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