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Last Session of the Summer – Dr Chris North

A good last session of the summer from Chris North this week and a good turnout.  Lots of questions both technical and on the value of fundamental research

An interesting article has been published recently on the discovery of an orbiting pair of super massive black holes, each around 15 billion times the mass of the sun, around 750 Lyrs distant.  They are estimated to be 24 Lyrs apart and orbiting every 30,000 years.  Although they will merge it won’t be for millions of years yet.
Will give the gravitational wave observers something to look for over the next few years.

One other point from the paper that links to a question that Chris answered on detection systems: “While mergers of SMBHB’s are expected to be common emitters of GW radiation, modulating pulsar timing observations have not yet detected any evidence for a GW signal”. Quote from a 2016 paper, but the authors are hopeful that with the size of these BHs and improved sensitivity that may change.

Science Daily     :     phys.org     :     Original Paper 

Enjoy your summer and see you all at the next meetings in September.

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