Séminaire / Seminar GReCO |
| « François Arago : Shedding Light on Dark Energy » |
|
Eric Linder |
| The physical process leading to the acceleration of the expansion of the universe is unknown. It may involve new high energy physics or extensions to gravitation. I examine the consistencies and relations between these two approaches to dark energy, showing that an effective equation of state function w(z) is broadly useful in describing its properties. A variety of cosmological observations can provide important information on the dark energy dynamics. I discuss the SNAP satellite proposed to combine supernova distance measurements and a weak gravitational lensing survey, and what this can reveal about the nature of dark energy. |
|
jeudi 21 octobre 2004 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |