|Speaker:||Ariel Goobar (Oskar Klein Centre, Stockholm University)|
|Title:||Cosmology with Type Ia SN after the Nobel prize: level-up or game-over?|
|Date (JST):||Wed, Mar 27, 2013, 13:30 - 15:00|
|Place:||Seminar Room A|
The discovery of the accelerated expansion using Type Ia supernovae completely changed our understanding of what the Universe is made of.
We now know that dark energy, the least theoretically understood energy form, is the dominant component.
All attempts to find observational deviations from Einstein's cosmological constant have been fruitless -so far. Given the current constraints, future efforts to study the nature of dark energy will be limited by systematic uncertainties. Distance measurements with Type Ia SNe remain a very competitive cosmological probe, provided we can address some of the outstanding astrophysical concerns: extinction by dust and brightness evolution.