feb 282013
 
The Mystery of a Super-Fast Spinning Supermassive Black Hole

  Two X-ray space observatories, NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) and the European Space Agency’s XMM-Newton, have teamed up to measure definitively, for the first time, the spin rate of a black hole with a mass 2 million times that of our Sun.  This artist’s concept illustrates a supermassive black hole with millions to [continue reading]

okt 082012
 
How pulsars slow down with age

  Researchers at the University of Southampton have developed a model which explains how the spin of a pulsar slows down as the star gets older. The famous Crab Nebula (M1, NGC 1952 or Taurus A) is the remnant of SN 1054, a pulsar wind nebula with a diameter of 11 light-years, located in the Perseus Arm [continue reading]