Twenty years ago, observing Type Ia supernovae at varying redshifts produced the surprising result that the expansion of the Universe is accelerating. Since then, the Type Ia supernova Hubble diagram has become well populated out to a redshift of about 1. In addition to this, other types of supernovae have emerged as potential standard candles, for example super-luminous supernovae. These are significantly more luminous than the majority of Type Ia supernovae, and thus have the potential to probe even higher redshifts. In this session we will discuss recent developments in cosmological supernovae, including recent and current cosmology projects and the pro/cons, difficulties and opportunities in using supernovae for measurements of w, H₀ and σ₈. We will also look at methods for improving standardisation by looking at e.g. host galaxies, local environment of the supernovae, reddening, and twinning of high redshift Type Ia supernovae with similar nearby counterparts. We will then look towards utilising the new facilities coming online in the next few years for supernova cosmology, and possible synergies with other current/planned instruments. These new facilities will have a significant impact on the limits of observing cosmological supernovae, beginning with JWST in 2019, so this is a timely moment to have a dedicated EWASS special session on the topic.

We will be accepting poster contributions. Contributors not selected for a talk will also have the chance to present their work as a poster.

Programme

• Current/recent supernova cosmology projects.
• Studies of supernovae and their environments aiming to improve cosmology.
• Utilisation of future facilities.
• Pro/cons of using supernovae to measure different cosmological parameters.

Invited speakers
Invited speakers include:

• Ariel Goobar (Stockholm University, Sweden)
• Delphine Hardin (Université Pierre-et-Marie-Curie, Paris, France)
• Renée Hlozek (University of Toronto, Canada)
• Jakob Nordin (Humboldt-Universität zu Berlin, Germany)
• Mat Smith (University of Southampton, UK)

Scientific organisers
S. C. Williams (Lancaster University, UK)
I. M. Hook (Lancaster University, UK)
N. Regnault (Université Pierre-et-Marie-Curie, Paris, France)
M. Rigault (CNRS/IN2P3, Laboratoire de Physique de Clermont, France)
M. Sullivan (University of Southampton, UK)

Contact
Steve Williams; s.williams7 @ lancaster.ac.uk