2019ApJS..243....6G -
Astrophys. J., Suppl. Ser., 243, 6-6 (2019/July-0)
Rates and properties of supernovae strongly gravitationally lensed by elliptical galaxies in time-domain imaging surveys.
GOLDSTEIN D.A., NUGENT P.E. and GOOBAR A.
Abstract (from CDS):
Supernovae that are strongly gravitationally lensed (gLSNe) by elliptical galaxies are powerful probes of astrophysics and cosmology that will be discovered systematically by wide-field, high-cadence imaging surveys such as the Zwicky Transient Facility (ZTF) and the Large Synoptic Survey Telescope (LSST). Here we use pixel-level simulations that include observing strategy, target selection, supernova properties, and dust to forecast the rates and properties of gLSNe that ZTF and LSST will find. Applying the resolution-insensitive discovery strategy of Goldstein et al., we forecast that ZTF (LSST) can discover 0.02 (0.79) 91bg-like, 0.17 (5.92) 91T-like, 1.22 (47.84) Type Ia, 2.76 (88.51) Type IIP, 0.31 (12.78) Type IIL, and 0.36 (15.43) Type Ib/c gLSNe per year, with uncertainties dominated by uncertainties in the supernova rate. We also forecast that the surveys can discover at least 3.75 (209.32) Type IIn gLSNe per year, for a total of at least 8.60 (380.60) gLSNe per year under fiducial observing strategies. ZTF gLSNe have a median z
s = 0.9, z
l = 0.35, | µ
tot| =30, Δt
max = 10 days, min(θ) = 0.''25, and N
img = 4. LSST gLSNe are less compact and less magnified, with a median z
s = 1.0, z
l = 0.4, | µ
tot| =6, Δt
max = 25 days, min(θ) = 0.''6, and N
img = 2. We develop a model of the supernova-host galaxy connection and find that the vast majority of gLSN host galaxies will be multiply imaged, enabling detailed constraints on lens models with sufficiently deep high-resolution imaging taken after the supernova has faded. We release the results of our simulations as catalogs at
http://portal.nersc.gov/project/astro250/glsne/.
Abstract Copyright:
© 2019. The American Astronomical Society. All rights reserved.
Journal keyword(s):
gravitational lensing: strong - supernovae: general
Simbad objects:
3
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