mrt 022013
 
The Mysterious Structure of a Stellar-Mass Black Hole

  Like an immense donut (or toroid) that expands daily. That’s how Jesús Corral-Santana, a researcher at the Instituto de Astrofísica de Canarias (IAC), describes the odd – hitherto unknown – structure of the binary system Swift J1357.2-0933, consisting of a ‘normal’ star and a stellar-mass black hole (which feeds off its companion star). The [continue reading]