The Big Bang and Dark Matter

May 12, 2014

Who: Mads Frandsen (CP3-Origins)
When: Thursday, May 8, 2014 at 19:00
Where: U45

Projected density plot of a redshift z=2.5 dark matter halo from a cosmological N-body simulation. The visible part of the galaxy (not shown in the image) lies at the dense centre of the halo and has a diameter of roughly 20 kiloparsecs. There are also many satellite galaxies, each with its own subhalo which is visible as a region of high dark matter density in the image. (c) WikiMediaLast week Mads Frandsen gave a public talk arranged by The Danish Youth Association of Science – UNF-Odense.

Today we know, that we can only see 4% of the universe. This is the bright side of the universe consisting of the known elementary particles. But there is also a “dark side” consisting of “dark matter” and dark energy, which we cannot see and measure directly, but it constitutes more than 5 times as much of the universe. Among other things, dark matter is necessary to explain some the the largest structures we observe in the universe. It is still an open question what dark matter is made of.

In the talk Mads Frandsen will explain how we can be sure that dark matter exists, what its role is in the universe, and what it may consist of at the level of elementary particles.