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The Geometry of Kerr Black Holes Barrett O'Neill
Publisher: Dover Publications

Sep 2, 2011 - Now we get the ergosphere I wrote about, and the shape of the event horizon is an oblate spheroid: a sphere that has been sat upon so that it bulges at the equator. That was on Tuesday, and today we studied the motion of objects in the geometry around the rotating black hole. While a featureless sphere can be rotated around any axis you draw through the center (spherical symmetry or SO(3)), a Kerr black hole has a special axis of rotation, so the angle at which you observe or approach it will dictate what you see and measure. Cracking the Einstein Code: The Einstein code, as Melia puts it, is the six interlocking mathematical equations that make up the theory of general relativity, describing the effect of gravitation on the shape of space and time. Nov 13, 2012 - Testing the space-time geometry around black hole candidates with the analysis of the broad K$\alpha$ iron line. We get to apply the techniques we've been honing in the context of the Schwarzschild solution (link to recent posts below) to a bit more complicated solution, the Kerr solution, which includes rotation. Sep 12, 2013 - The bike-loving-blokes were caught on CCTV outside a takeaway in Boston bending the metal frame of the rack back into shape. Education secretary removes beloved classics from GCSE syllabus. Mar 13, 2014 - “Any kind of information you can get about how [melt ponds] evolve, their geometry, their area coverage … are the key parameters that go into assessments of albedo,” Golden says. Mar 28, 2008 - We've been studying rotating black holes in my class this week, which has been fun. Oct 15, 2010 - Fulvio Melia's book is the story of how the idea of black holes came into being: part description of the physics, part biography of the scientist Roy Kerr – the man who, against all odds, cracked 'the Einstein code'. Golden has also looked at the microstructure of Almost correct, but it would be more accurate to call galaxies and fundamental particles Kerr-Newman ultracompact objects, since they are not holes and may not be “black” to all observers. The footage shows the group spending almost 13 minutes straightening the damaged rack at 3am after going to a kebab house.