Determining the Fraction of Compact Objects in the Universe Using Supernova Observations

2001/03/29 by Edvard Mörtsell, E. Moertsell, A. Goobar +2 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Gamma-ray bursts and supernovae #astro-ph

paper · pdf · doi:10.1086/322396

6 pages, 5 figures

arxiv created 2001/03/29 · openalex publication_date 2001/09/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01

Abstract

We investigate the possibility of determining the fraction of compact objects in the universe by studying gravitational lensing effects on Type Ia supernova observations. Using simulated data sets from 1 yr of operation of the proposed dedicated supernova detection satellite Supernova/Acceleration Probe , we find that it should be possible to determine the fraction of compact objects to an accuracy of ≲5%.

Citations

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant

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• Cosmological Microlensing Statistics: Variability Rates for Quasars and Gamma‐Ray Burst Afterglows and Implications for Macrolensing Magnification Bias and Flux Ratios