STARS2017 - 4th Caribbean Symposium on Cosmology, Gravitation, Nuclear and Astroparticle Physics / SMFNS2017 - 5th International Symposium on Strong Electromagnetic Fields and Neutron Stars

The nature of dark energy from high z supernova observations

Not scheduled

30m

Talk STARS2017

Speaker

Pilar Ruiz Lapuente (IFF/CSIC and I-Barcelona ICC, Barcelona, Spain)

Description

I will review the ongoing tests for the nature of dark energy along redshift. Observations of Type Ia supernovae at redshift z beyond 1 test both the density of dark energy and the evolution of the equation of state. Is there evidence of an evolution or are we having a constant dark energy behaviour such as the one expected if dark energy is the cosmological constant? I will discuss the results by various surveys.