Detection of dark matter on the basis of GPS satellites

Published November 17 work Russian physics Derevjanko (works in the US, specializing in nuclear hours) and Pospelov (running in Canada) propose to build a detector of dark matter on the basis of the already existing network of GPS-satellites.

In a detailed proposal helps to understand статья on the resource ExtremeTech . One of the features of these satellites is a very accurate measurement of time, as amended, on the relativistic effects arising due to the speed of their movements. However, such effects can also arise under the influence of gravitational fields. The mass of dark matter in the universe is believed in modern astrophysics, about five times the mass of the ordinary. Because dark matter is characterized by its massiveness, the mass effect on the course of time, and GPS satellites can accurately measure time - one can turn said detector.



Andrei Derevianko. I>

When using this watch will measure the perturbations created by moving dark matter, it will be possible to calculate that the object has called for these perturbations. A feature of the measurements associated with dark matter is the fact that, in contrast to the usual, it's not going to large gatherings and does not create a "dark star" or "dark galaxies". She moves through the universe at great speeds, and creates spatial structures resembling spider web. These structures are so large that they are almost impossible to measure by means of small objects such as moving orbit satellites. Measurements will be successful only if the correct one of the theories of dark matter: the model of topological defects.



According to this model, during the cooling of the universe after the Big Bang, dark matter made the phase transition and "stagnation" in the matrix structure having some defects - magnetic monopoles, two-dimensional membranes, etc. One of the most famous of these possible defects - cosmic string: the object is not thicker than an atom, but the length of a few light years, bringing its mass is huge. If such a cosmic string or other similar object will be held near the detector dark matter, it is possible to detect. Of course, there is no guarantee such events, even if the detector does not detect anything, it would not mean that the theory is wrong, and these defects do not exist. But from the point of view of science, it's worth it.

Dark matter - a hypothetical matter that does not interact with electromagnetic radiation, and its influence can be detected only through gravity. She coined after the discovery of the fact that galaxies rotate so if they weigh on orders of more than weighs all visible their constituent matter. Then it was suggested the existence of some undetectable by conventional means of matter, has only a gravitational influence.

Source: geektimes.ru/post/241740/