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

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 wi...

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Published inMonthly notices of the Royal Astronomical Society Vol. 429; no. 3; pp. 2392 - 2399
Main Authors Kostrzewa-Rutkowska, Zuzanna, Wyrzykowski, ukasz, Jaroszy ski, Micha
Format Journal Article
LanguageEnglish
Published London Oxford University Press 01.03.2013
Subjects
Cosmology
Red shift
Simulation
Stars & galaxies
Supernovae
cosmology: miscellaneous
supernovae: general
gravitational lensing: strong
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ISSN0035-8711
1365-2966
DOI10.1093/mnras/sts505

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Summary: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.
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ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/sts505