Results 111 to 120 of about 13,060 (254)
Iterative reconstruction excursions for Baryon Acoustic Oscillations and beyond [PDF]
, 2021 Hee‐Jong Seo +4 more
openalex +1 more source
Monopole Fluctuations in Galaxy Surveys
The Astrophysical Journal LettersGalaxy clustering provides a powerful way to probe cosmology. This requires understanding of the background mean density of galaxy samples, which is estimated from the survey itself by averaging the observed galaxy number density over the angular ...
Jaiyul Yoo, Daniel Eisenstein
doaj +1 more source
Observational constraints on dark matter–dark energy scattering cross section
European Physical Journal C: Particles and Fields, 2017 In this letter, we report precise and robust observational constraints on the dark matter–dark energy scattering cross section, using the latest data from cosmic microwave background (CMB) Planck temperature and polarization, baryon acoustic oscillations
Suresh Kumar, Rafael C. Nunes
doaj +1 more source
European Physical Journal C: Particles and FieldsWe perform a dynamical system analysis and a Bayesian model selection for a new set of interacting scenarios in the framework of modified holographic Ricci dark energy (MHR-IDE) models.
Antonella Cid, Israel Obreque
doaj +1 more source
BAO Extractor: bias and redshift space effects
, 2018 We study a new procedure to measure the sound horizon scale via Baryonic Acoustic Oscillations (BAO). Instead of fitting the measured power spectrum (PS) to a theoretical model containing the cosmological informations and all the nonlinear effects, we ...
Nishimichi, Takahiro +3 more
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Testing the cosmic distance duality relation with baryon acoustic oscillations and supernovae data
European Physical Journal C: Particles and FieldsOne of the most fundamental relationships in modern cosmology is the cosmic distance duality relation (CDDR), which describes the relationship between the angular diameter distance ( $$D_\textrm{A}$$ D A ) and the luminosity distance ( $$D_\textrm{L}$$ D
Tian-Nuo Li +5 more
doaj +1 more source
Forecast and analysis of the cosmological redshift drift
European Physical Journal C: Particles and Fields, 2018 The cosmological redshift drift could lead to the next step in high-precision cosmic geometric observations, becoming a direct and irrefutable test for cosmic acceleration.
Ruth Lazkoz +2 more
doaj +1 more source
Squeezing Full-shape Dynamical Dark Energy Constraints with Galaxy Alignments
The Astrophysical Journal LettersRecent 2 σ –4 σ deviations from the cosmological constant ${\rm{\Lambda }}$ suggest that dark energy (DE) may be dynamical, based on baryon acoustic oscillations and full-shape galaxy clustering (FS GC) analyses.
Junsup Shim +2 more
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A power-law coupled three-form dark energy model
European Physical Journal C: Particles and Fields, 2018 We consider a field theory model of coupled dark energy which treats dark energy as a three-form field and dark matter as a spinor field. By assuming the effective mass of dark matter as a power-law function of the three-form field and neglecting the ...
Yan-Hong Yao, Yang-Jie Yan, Xin-He Meng
doaj +1 more source
Unknowns and unknown unknowns: from dark sky to dark matter and dark energy
, 2010 Answering well-known fundamental questions is usually regarded as the major goal of science. Discovery of other unknown and fundamental questions is, however, even more important.
Suto, Yasushi
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