What galaxies can tell us about dark matter?

The most recent cosmological observations seem to confirm that our Universe is dominated with dark matter and is boiling with dark energy. Our knowledge about it almost exclusively has been acquired from observations of light emitted by ordinary barion matter. However, the barion matter is just some small fraction of the matter trapped inside galaxies. Therefore one can reasonably ask the question: what galaxies can tell us about the dark matter? How sensitive the barion matter is now (or was in the past) to the dark matter distribution (that can be envisioned as a "cosmic net")? And vice versa: how location of a galaxy within the cosmic net could have influenced fate of that galaxy?

Attempts to join history of the "light side" of the Universe with history of the "dark side" of the Universe will be made. The most recent observations that have suggested a 3D structure of the Universe twice as younger than to-day will be presented.

All interested may take NCBJ bus from Warsaw to Świerk. The bus will leave at 10.15 from entrance gate to the Hoża 69 premises in Warsaw.

Professor Ludwik Dobrzyński