In this talk, I will summarise our recent results on constraining dark energy and measuring the local expansion rate, i.e. the Hubble constant, with Type Ia supernovae and gravitationally lensed transients. Despite growing evidence of accelerated expansion of the universe, the physical mechanism driving this phenomenon is poorly understood. Using geometric probes, we find no significant evidence suggesting a paradigm outside standard cosmology, i.e. dark energy as a cosmological constant, however, we obtain moderate evidence disfavouring some of the non-standard models.
Speaker: Suhail Dhawan, Stockholm
Room LBL 50-5026
Contact:Website: Click to Visit
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Berkeley, CA 94720
Website: Click to Visit