OUT OF ONE, MANY: DISTINGUISHING TIME DELAYS FROM LENSED SUPERNOVAE
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Date
2022
Authors
Denissenya, Mikhail
Bag, Satadru
Kim, Alex G
Linder, Eric V
Shafieloo, Arman
Journal Title
Journal ISSN
Volume Title
Publisher
Monthly Notices of the Royal Astronomical Society
Abstract
Gravitationally lensed Type Ia supernovae are an emerging probe with great potential for constraining dark energy, spatial curvature, and the Hubble constant. The multiple images and their time delayed and magnified fluxes may be unresolved, however, blended into a single light curve. We demonstrate methods without a fixed source template matching for extracting the individual images, determining whether there are one (no lensing) or two or four (lensed) images, and measuring the time delays between them that are valuable cosmological probes. We find 100 per cent success for determining the number of images for time delays greater than ∼10 d.
Description
Keywords
Type of access: Open Access, gravitational lensing: strong, transients: supernovae, cosmology: observations, methods: numerical, data analysis
Citation
Denissenya, M., Bag, S., Kim, A. G., Linder, E. V., & Shafieloo, A. (2022). Out of one, many: distinguishing time delays from lensed supernovae. Monthly Notices of the Royal Astronomical Society, 511(1), 1210–1217. https://doi.org/10.1093/mnras/stac143