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Episode 116: Exploring Cosmic Events with Professor Rene Breton at Jodrell Bank Centre for Astrophysics

By Gurbir Dated: June 27, 2024 Leave a Comment

Professor Rene Breton. Deputy head of the Department of Astronomy and Physics at the Jodrell Bank Centre for Astrophysics

Some of the most energetic events in the cosmos are associated with the products left after a star’s violent end. These products are always smaller and denser: a white dwarf (the size of a planet), a Neutron star (the size of a city), or a Black Hole (an object without a size). The bigger the initial mass of a star, the sooner and more energetic its end will be. Our Sun is not all that massive; it will end up as a white dwarf in and out 4.5 billion years from now.

Professor Rene Breton, originally from Quebec, has been working at the Jodrell Bank Centre for Astrophysics for over a decade. We discuss only a small part of his current research, including how Pulsars may one day be used as a GPS for interstellar travel. Other topics include

Credit McGill University
  • Why and how he ended up in Manchester
  • His first impressions of Manchester and comparisons with Quebec in Canada
  • The key role of a high-school teacher, Mr. Gaudreault, setting him on his career in science
  • Stellar evolution – how stars are born and the process by which they end up as white dwarfs, neutron stars and black holes
  • Event Horizon Telescope – imaging the black hole in the centre of our galaxy
  • The ultimate fate of our Sun
  • Quasars are distant galaxies with a Black Hole in the centre,  so distant that they look like stars. 
  • FAST Radio bursts, including Gamma Ray Bursts (GRBs), are from extragalactic distances. Events that last a few seconds or less – a sign of merging neutron stars or evidence of Hypernovae (not novae or supernovae)!
  • Neutron Stars in Binary Systems, accretion discs and “spiders”
  • Neutron Stars as a cosmic GPS for future space travellers
  • Detect Gravitational Waves using neutron stars. Gravitational Wave detectors are not very sensitive, so they can only detect high-energy events, such as the collision of two neutron stars or the formation of black holes. 
  • Space-borne Gravity Wave detectors, such as the Laser Interferometer Space Antenna, which NASA plans to launch in the 2030s, will be able to detect a wider range of cosmological phenomena.
  • Square Kilometer Array’s role in detecting more neutron stars, pulsars and even pulsars orbiting black holes
  • Pulsar Timing Array – a GPS for interstellar travel

Professor Rene Breton. University of Manchester. Jodrell Bank Centre for Astrophysics

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Filed Under: Cosmology, Education, Jodrell Bank, podcast, Radio Astronomy Tagged With: Cosmology, Jodrell Bank, radio astronomy

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