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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We investigate the effect of microlensing on the standardisation of stronglylensed Type Ia supernovae (GLSNe Ia). We present predictions for the amount ofscatter induced by microlensing across a range of plausible strong lensmacromodels. We find that lensed images in regions of low convergence, shearand stellar density are standardisable, where the microlensing scatter is <0.15 magnitudes, comparable to the intrinsic dispersion of for a typical SN Ia.These standardisable configurations correspond to asymmetric lenses with animage located far outside the Einstein radius of the lens. Symmetric and smallEinstein radius lenses (< 0.5 arcsec) are not standardisable. We apply ourmodel to the recently discovered GLSN Ia iPTF16geu and find that the largediscrepancy between the observed flux and the macromodel predictions from Moreet al. (2017) cannot be explained by microlensing alone. Using the mock GLSNeIa catalogue of Goldstein et al. (2017), we predict that ~ 22% of GLSNe Iadiscovered by LSST will be standardisable, with a median Einstein radius of 0.9arcseconds and a median time-delay of 41 days. By breaking the mass-sheetdegeneracy the full LSST GLSNe Ia sample will be able to detect systematics inH0 at the 0.5% level.

The Impact of Microlensing on the Standardisation of Strongly Lensed Type Ia Supernovae