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in title, tags, annotations or urlDid a hyper-black hole spawn the Universe? - 3 views
Slashdot Science Story | New Interactive Black Hole Simulation Published - 3 views
Fast-spinning black holes might reveal all - physics-math - 08 August 2009 - New Scientist - 0 views
Slashdot Science Story | First Acoustic Black Hole Created - 0 views
Milky Way Grew by Swallowing Other Galaxies - 0 views
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Globular clusters in our galaxy would be the remnants of dwarf galaxies eaten by our galaxy the milky way ! This assumption is quite revolutionary and would support an accretion model of the universe rather than the formation of huge galaxies. So what about the formation of giant black holes in the center of galaxies...?
A Population of Fast Radio Bursts at Cosmological Distances - 1 views
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completely new cosmic phenomenon?
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The final goodbye of a massive star collapsing to a black hole? http://www.sciencedaily.com/releases/2013/07/130705101626.htm?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+sciencedaily+%28ScienceDaily%3A+Latest+Science+News%29
Artificial Braneworlds Made to Collide In Lab - Technology Review - 4 views
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Physicists have simulated two universes colliding inside a metamaterial-- Now, this is cool (if it is true...)
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Hm, they use more or less everything I don't especially like. They are nonmagnetic, so the relation materialGR is already rather weak. Usually, experimentalists prefer nonmagnetic media, since they are cheaper and broadband. At least the broadband is no argument here, since the frequency defines the "mass", which I find a rather strange point of view. And finally, they use strong anisotropy as a model of "time", which is rather problematic. Of course, the spatial direction with eps<0 appears in the wave equation with the same sign as time. But this does not mean that it behaves like time. But to teach material physicists that time is more than just a different sign in the wave equation seems to be as hopeless as to teach them that a black hole is more than something that absorbs all light... SIGHHH
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Luzi I miss you ...
Swarm behaviour modified by air/sea turbulence. - 2 views
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Seems looking into turbulence is a source of innovative concepts. After the black hole modelling here was found a mathematical expression which describes "how turbulence can alter the shape and course of a flock of birds, a swarm of insects or even an algal bloom (phytoplankton!) and could help us to better predict them". More relevant for motions in air and sea, rather than space, where the fluids are dense enough to exhibit turbulence ; but what about a swarm moving in and exploring an exoplanet's atmosphere?
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