Wednesday 26 June 2013 

Speaker: David Bugg (Queen Mary, London)


Title: "Galaxies and Quantum Mechanics" 

Abstract: Rotation curves of galaxies are well fitted by MOND 
(Modified Newtonian  Dynamics),  introduced  in 1983  by  Milgrom.  
The observed  modifications have five features all requiring quantum 
mechanical explanations. The maximum modification lies where Newtonian 
acceleration = a_0 = 10^-10 m s^-2 and 2*pi*a_0=c*H_0, where  H_0 is the local 
Hubble acceleration.  A simple relation to Dark Energy has the potential 
to explain  late-time  acceleration of the Universe.   Much work  
remains  to be  done refitting  the Cosmological  model Lambda_CDM  to 
extensive existing data. There is scope for further surprises.