Pulsars put new spin on evidence for dark matter

时间:2017-04-13 01:00:04166网络整理admin

By David Shiga EVEN those whose idea this is hope they are wrong – pulsars, rather than dark matter, might be responsible for an usually large number of high-energy particles discovered in space. In August, the team behind the PAMELA satellite reported seeing an excess of positrons – the antimatter equivalent of electrons – zipping around space at high speed. This caused excitement among physicists, who wondered if it could be a signature of dark matter. Although this mysterious substance is thought to make up a large proportion of the universe, so far it has only been detected indirectly,