On rates of supernovae strongly lensed by galactic haloes in Millennium Simulation

This is the authors' abstract. We don't add key points for this paper.

We make use of publicly available results from N-body Millennium Simulation to create mock samples of lensed supernovae Type Ia and core-collapse. Simulating galaxy–galaxy lensing we derive the rates of lensed supernovae and find that at redshifts higher than 0.5 about 0.06 per cent of supernovae will be lensed by a factor of 2 or more. Future wide-field surveys like Gaia or Large Synoptic Survey Telescope (LSST) should be able to detect lensed supernovae in their unbiased sky monitoring. Gaia (from 2013) will detect at least 2 cases, whereas LSST (from 2018) will see more than 500 a year. Large number of future lensed supernovae will allow us to verify results of cosmological simulations. The strong galaxy–galaxy lensing gives an opportunity to reach high-redshift supernovae Type Ia and extend the Hubble diagram sample.