Out of one, many: distinguishing time delays from lensed supernovae
Denissenya M. Bag S. Kim A.G. Linder E.V. Shafieloo A.
1 March 2022Oxford University Press
Monthly Notices of the Royal Astronomical Society
2022#511Issue 11210 - 1217 pp.
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.
cosmology: observations , gravitational lensing: strong , methods: numerical, data analysis , transients: supernovae
Text of the article Перейти на текст статьи
Energetic Cosmos Laboratory, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
Korea Astronomy And Space Science Institute, Daejeon, 34055, South Korea
Lawrence Berkeley National Laboratory, Berkeley, 94720, CA, United States
Berkeley Center For Cosmological Physics, University Of California, Berkeley, 94720, CA, United States
Department Of Astronomy And Space Science, University Of Science And Technology, Daejeon, 34113, South Korea
Energetic Cosmos Laboratory
Korea Astronomy And Space Science Institute
Lawrence Berkeley National Laboratory
Berkeley Center For Cosmological Physics
Department Of Astronomy And Space Science
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026