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black hole

Below are the episodes of the Jodcast (or segments) which match the keyword black hole. You can continue searching by going back to the tag cloud.

• The news - May 2008 - May 2008 (MP3)
  In the news this month: evidence for a black hole at the centre of Omega Centauri, X-ray light echoes show that Sagittarius A* was active 300 years ago, radio observations catch a supermassive black hole in outburst, and the Hubble Space Telescope celebrates 18 years in orbit.
• The news - January 2008 - January 2008 (MP3)
  In the news this month: black hole blasts companion galaxy, latest results from Venus Express, Earth's Moon may be younger than thought and the UN declare 2009 the International Year of Astronomy.
• Interview with Dr Anna Watts (MPA) - January 2008 (MP3)
  Nick talked to Anna Watts about neutron stars. Anna tells us how these extremely dense objects push our understanding of general relativity and nuclear physics. Observations using X-ray telescopes are now allowing us to monitor star quakes and infer properties of highly magnetised neutron stars - magnetars.
• The news - November 2007 - November 2007 (MP3)
  In the news this month: outburst from Comet Holmes, direct evidence of cosmic ray production, black hole challenges theories of stellar evolution and an asteroid is named after .
• Interview with Dr Martin Bureau - August 2007 (MP3)
  Nick talked to Dr Martin Bureau about the formation of galaxies.
• May 2007 Extra (MP3)
  This is the first of our new mid-month shows. First we get some breaking news from the Hubble Space Telescope, we listen to the second half of our interview with Carole Mundell about active galactic nuclei and supermassive black holes, and we put your questions to Tim in the Ask an Astronomer segment. For the extra shows we won't be having the normal format intros and outros but we still won't take them too seriously. As a start we work out how many rice crispies you could fit in the 76m diameter Lovell Telescope. Can you work it out?
• Interview with Dr Carole Mundell (Liverpool John Moores University) - May 2007 Extra (MP3)
  Nick Rattenbury talked to Carole Mundell about supermassive black holes in active galaxies. We find out that black holes aren't really great cosmic vacuum cleaners and allow some matter to escape their grasp and be hurled out in jets. Some of these jets even appear to be moving faster than light.
• Interview with Dr Carole Mundell (Liverpool John Moores University) - May 2007 (MP3)
  Nick Rattenbury talked to Carole Mundell about gamma ray bursts. We find out what the current ideas are about the causes of these hugely bright objects. Carole describes the international effort, with a huge array of automatic and robotic telescopes, to observe them as quickly as possible once they happen; even if that means being sent text messages and emails in the middle of the night!
• Interview with Prof Steve Rawlings (University of Oxford) - April 2007 (MP3)
  Nick Rattenbury talks to Steve Rawlings about black holes and quasars.
• Interview with Dr Martin Hardcastle (University of Hertfordshire) - January 2007 (MP3)
  Nick talked to Martin Hardcastle about radio galaxies and active galactic nuclei (AGN). We find out what an AGN is, what makes the nucleus active and how different types of telescope can show us different parts of an AGN.
• Interview with Prof Peter Wilkinson (Jodrell Bank Observatory) - January 2007 (MP3)
  Nick talked to Peter Wilkinson about the origins of the Square Kilometre Array and found out what sort of exciting physics and astronomy may be possible with a telescope that big.
• Interview with Michael Kramer - January 2006 (MP3)
  Dr Michael Kramer tells us about cosmic lighthouses - pulsars. He explains the lighthouse effect which makes the pulsar appear to pulse when observed by a radio telescope. He also describes the recent discovery of the 'double pulsar' which has provided new ways to test Einstein's General Relativity.