8/25/2023 0 Comments Youtube black holes![]() ![]() Prof Michael Kramer, of the Max Planck Institute for Radio Astronomy in Bonn, told BBC News that the discovery could change ideas about the cosmos entirely. ![]() By monitoring the ‘ticks’ from these clocks, which are spread throughout our galaxy, we can see the impact of passing gravitational waves in making the pulsar signals arrive earlier or later.” ‘Einstein gets full marks’ Prof Evan Keane, associate professor of radio astronomy in Trinity College Dublin’s School of Physics, said: “Pulsars are basically super clocks in space. If the clock loses or gains time it means that a gravitational wave has swept through, distorting the fabric of the universe. The fastest pulsars emit a beam of radiation that behaves like a cosmic lighthouse and can be used as a natural clock. It was discovered by searching for disruptions in the constant beat of pulsars: the collapsed remains left behind after the explosions of massive stars, where the core survives as a city-sized neutron star. The detection follows 25 years of observation using six of the world’s most sensitive radio telescopes by a team from the European Pulsar Timing Array which included several British universities. He expected that violent collisions in the universe would produce ripples in that fabric but even he did not believe that they would be detectable, and twice declared that they did not exist.Ī small “chirp” proving that they existed was first found in 2016, but the new finding offers greater proof of their huge spacetime distorting impact. Einstein said that space should not be seen as a vacuum but rather a four dimensional “fabric” that could be warped by huge bodies, like planets, in the same way that a heavy ball would distort a rubber sheet.
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