Summary #1010

Astronomers witness the dragging of space-time in stellar cosmic dance

phys.org
  • By closely tracking light coming off a pulsar in the PSR J1141-6545 system, scientists have confirmed another prediction from Einstein’s General Relativity theory.
  • The system consists of a pulsar and a white dwarf that’s 100 billion times as dense as Earth, which makes it particularly interesting for studying relativity.
  • It took 20 years of gathering data with the CSIRO Parkes 64-metre radio telescope, and a team of scientists to untangle the mysteries hidden in the data.
  • The mystery was uncovered by treating the pulsar as a clock, which enabled the team to find evidence of frame-dragging.
  • Frame-dragging is the twisting of space and time that occurs due to the spin of celestial bodies.

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