Cosmology

---

Plot from Betoule et al. 2014 showing the best current constraints on the Dark Energy equation of state, "w," versus Omega_Matter, the amount of matter in the universe. Our supernova results are in blue. The Planck results are in green, and the intersection is in gray. This version of the plot is by Alex Conley.

---

Measurements of Dark Energy from the Supernova Legacy survey

• Joint SNLS-SDSS-II analysis.  Betoule et al. 2014.  
• SNLS3 results.  Sullivan et al. 2011; Conley et al. 2011; Guy et al. 2010.
• Initial SNLS results. Astier et al. 2006.

Type Ia Supernovae as Stellar Endpoints and Cosmological Tools

My 2011 review article for Nature Communications.  [Online] [PDF]

---