1,500,000 CPU hours on the Teragrid
Monday, December 20, 2010The Project “High energy grazing collisions of black holes” (PI U.Sperhake, Co-Is E.Berti, V.Cardoso and F.Pretorius) has been awarded a further 1,500,000 CPU hours on the NSF TeraGrid under grant No. PHY090003. The allocation has been split into 500,000 CPU hours on the NICS Kraken cluster and 1,000,000 SPU hours on the SDSC Trestles cluster.
Black holes keep their clothes
Friday, December 10, 2010It was suggested some months ago that black holes might be destroyed by throwing high-energy point particles at them. Now, Enrico Barausse, Vitor Cardoso and Gaurav Khanna showed that such a process does not appear to be possible, in a paper to appear in Physical Review Letters. There is a mechanism, known as self-force, which acts to prevent black hole destruction: the black hole shrinks in such a way that the particle just flies-by. Read the news blurb at Physics Buzz