English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Using only Ia supernova (SN) observations, it is not possible to distinguishthe evolution of the SN absolute magnitude $M_B$ from an arbitrary evolution ofthe Hubble parameter H(z). However, using Etherington's distance-dualityrelation, which relates the angular and luminosity distances, together with theobserved angular baryon acoustic oscillation (BAO) scale at any redshift z, onemay calibrate an effective M(z). This calibration involves a scale whichdepends on the cosmological model, however the evolution of the effective M(z)between two redshifts with BAO observations is independent of this scale. Theline of sight BAO scale can be used to extend this calibration to redshiftsnear z. As an application, using BOSS BAO at z=0.32 and 2.34, JLA supernova atlow $z$ and Hubble Space Telescope SN at z>1.7, we find a statisticallyinsignificant downward shift M(2.34)-M(0.32)=-0.08$\pm$0.15. Replacing BOSSdata with the best fit Planck LCDM BAO expectations, we find a shift of-0.24$\pm$0.13. With the SN that will be observed by the James Webb SpaceTelescope, such a calibration at z=2.34 will be more precise, and it will serveas an anchor for cosmological analyses with the SN that it will observe at yethigher z.

Calibrating Effective Ia Supernova Magnitudes using the Distance Duality Relation