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SUMMARY:Galaxies Without Dark Matter - Indranil Banik
DTSTART:20140302T150000Z
DTEND:20140302T153000Z
UID:TALK51199@talks.cam.ac.uk
CONTACT:Trinity College Science Society
DESCRIPTION:Observations on galactic scales reveal an acceleration discrep
 ancy: a mismatch between predicted and observed values\, when applying New
 ton's Law of Gravity (the Inverse Square Law) to observed mass. The existe
 nce of dark matter is therefore inferred. Unsurprisingly\, it always works
 . But is it right? Null detection at the LHC and other direct searches for
  the particle make this increasingly unlikely. This lecture will show why 
 vast amounts of dark matter combined with purely Newtonian gravity is not 
 the most likely explanation from an Astrophysical point of view either. Ra
 ther\, it is the assumption of Newtonian gravity that probably fails at ul
 tralow accelerations. This is likely due to quantum effects\, which are ig
 nored in our theories of gravity but usually become important when the num
 bers are small.
LOCATION:Winstanley Lecture Theatre
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