Einstein’s general relativity is amazingly durable – astrophysicists have now re-established with unprecedented precision
The physics laboratory, which michael kramer has chosen from the university of manchester and its domestic colleagues worldwide, is not tailored to public transport. Kramer will only be able to see his life from afar. And that’s a good thing, because the chance to survive on a neutron star, even in the optimistic case goes against zero. In addition, the arrival took unreasonably long – with lighting speed up to 2000 years. The study object, which the scientific team has chosen around kramer, is called psr j0737-3039. It was only three years ago discovered and is the first known star system, in which two pulses around each other.
That it is so well suited as a test laboratory for einstein’s general relativity (and in particular the detection of space-time crumminess caused by gravity, lies on the extreme conditions that prevail there. As special neutron stars have the two components of psr j0737-3039 despite about one and a half-fold solar masses only a diameter of 20 kilometers, they are superconducting and suprafluid and turn (at a distance, the approximately double earth moon distance corresponds) in just 2.4 hours around the common focus.