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The Dark Side of Matter with Ubi Wichoski

October 27, 2005 at 1:30 PM in Stirling D

The standard model of cosmology, also known as the big-bang model, is successful in accounting for the ordinary matter that makes up planets, dust, stars and everything else that is made of protons and neutrons (baryonic matter). However, there is extensive astrophysical evidence that most of the matter in the Universe is dark and non-baryonic. This dark matter is detected only by its gravitational pull as it does not emit nor absorb electromagnetic radiation. It is widely accepted that dark matter is made of elementary particles even though such a particle has yet to be discovered.

Dark matter is expected to exist in scales ranging from galactic to cosmological and therefore must exist in our own galaxy, where an ongoing experimental effort searches for it. In this talk, we will present an overview of the field and in particular discuss in detail the status of the PICASSO dark matter search experiment.

Refreshments will be available after the talk. Dr Wichoski is a short-listed applicant for the Tier II CRC in Particle Astrophysics.


Comments 5

  1. steph wrote:

    and all we get here are guys chuntering on about attosecond laser pulses, which while neat, is not nearly esoteric enough for my eyes to light up over it….sigh

    Posted 26 Oct 2005 at 10:04 pm
  2. jason wrote:

    Are they down to attoseconds yet? Last I heard, they were in the nano range.

    Posted 26 Oct 2005 at 10:53 pm
  3. steph wrote:

    yeah, he was talking about harnessing ionization and rapidly changing electric fields to generate pulses of about 250 attoseconds. it’s a little tricky to explain without a diagram, but it was kinda interesting. the technology’s very new and so i don’t think they quite grasp what to do with it to really get the most they can out of it, but that’ll come with time.

    Posted 27 Oct 2005 at 8:56 am
  4. Chris wrote:

    Ubi Wichoski: wasn’t he the guy who directed The Matrix?

    Also, didn’t I see a paper a while ago that basically claimed that the vast majority of dark matter could be explained away by proper application of General Relativity that no one had apparently bothered to do before?

    Posted 27 Oct 2005 at 8:47 pm
  5. Eve wrote:

    Makes sense.

    Posted 28 Oct 2005 at 10:50 am