Tag: astrophysics
By now you’ve likely heard that scientists reported detecting the long-sought gravitational waves; this is roughly a 100 years since their prediction by Einstein’s theory of general relativity and more than 20 years since first funding for the LIGO (Laser Interferometer Gravitational-wave Observatory (LIGO) project to find them. You can safely assume the National Science Read more…
While philosophers debate whether our universe, and all of us in it, may exist solely within a giant computer simulation, scientists at Durham University turned the idea of a virtual universe into reality. Hoping to gain a better understanding of the mechanisms that give rise to stars, galaxies and even dark matter, astronomers from Durham Read more…
Thanks to the power of supercomputing, scientists from the Universities of Göttingen and Copenhagen now have a better understanding of one of the most ancient stars in the universe. The results of their study were published in the July 21st edition of Astrophysical Journal Letters. The group used high-resolution computer simulations to model the formation of the oldest Read more…
For those outside the HPC/science realm who question why there need to be ever-more powerful supercomputers, one need only look at the amazing breakthroughs that the petascale age has facilitated. Astrophysics research out of Caltech is the latest example. Because of leadership-class systems like Stampede and Blue Waters and their experienced support staff, researchers from Read more…
Astrophysicists at the CEA (the French Alternative Energies and Atomic Energy Commission) and CNRS (the French National Center for Scientific Research) have achieved a major breakthrough. Thanks to a set of highly precise supercomputer simulations, the scientists have a much keener understanding of the turbulence that is generated when two galaxies collide. The study used Read more…
Astrophysicists and cosmologists have come up with a new time-lapse simulation of the universe’s evolution that is the most comprehensive and detailed yet. The Illustris simulation, as it’s called, spans 13.8 billion years of cosmic evolution and follows thousands of galaxies taking into account gravity, hydrodynamics, cooling, the course of stellar population and other complex Read more…
When an orbiting star gets too close to a galaxy’s central supermassive black hole, it eventually gets torn apart by the immense gravitational forces, a phenomenon known as a “tidal disruption.” Although black holes cannot be seen directly, since their dense mass means that not even light can escape, the inhaled star produces a brief Read more…
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