2010/01/30 by Rahul Biswas, R. Biswas, Esfandiar Alizadeh +2 · 2 citations
Mathematics · Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark field microscopy #Equation of state #Galaxies: Formation, Evolution, Phenomena #Gaussian #Mathematics #Optics #Physics #Quantum mechanics #Scale (ratio) #Scaling #Sensitivity (control systems) #Statistical physics #Theoretical physics #Variance (accounting) #Void (composites) #astro-ph.CO
paper · pdf · doi:10.1103/physrevd.82.023002
published as Phys.Rev.D82:023002,2010 · Submitted to PRD, 22 pages 9 figures
arxiv created 2010/01/30 · openalex publication_date 2010/07/07 · arxiv updated 2014/11/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The shapes of cosmic voids, as measured in spectroscopic galaxy redshift surveys, constitute a promising new probe of dark energy (DE). We forecast constraints on the DE equation of state and its variation from current and future surveys and find that the promise of void shape measurements compares favorably to that of standard methods such as supernovae and cluster counts even for currently available data. Owing to the complementary nature of the constraints, void shape measurements improve the Dark Energy Task Force figure of merit by 2 orders of magnitude for a future large scale experiment such as EUCLID when combined with other probes of dark energy available on a similar time scale. Modeling several observational and theoretical systematics has only moderate effects on these forecasts. We discuss additional systematics which will require further study using simulations.