Constraining a possible variation of G with Type Ia supernovae

Understand

Astrophysical cosmology constrains the variation of Newton's Constant in a manner complementary to laboratory experiments, such as the celebrated lunar laser ranging campaign.

• Supernova cosmology is an example of the former and has attained campaign status, following planning by a Dark Energy Task Force in 2005.
• In this paper we employ the full SNIa dataset to the end of 2013 to set a limit on G variation.
• In our approach we adopt the standard candle delineation of the redshift distance relation.