Results 31 to 40 of about 3,180,602 (301)
Sample Variance in Cosmological Observations with a Narrow Field of View
The Astrophysical Journal, 2023 Surveys with a narrow field of view can play an important role in probing cosmology, but inferences from these surveys suffer from large sample variance, arising from random fluctuations around the cosmic mean.
Peter Espenshade, Jaiyul Yoo
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Modified Gravity and Cosmology [PDF]
, 2021 General Relativity and the $\Lambda$CDM framework are currently the standard lore and constitute the concordance paradigm. Nevertheless, long-standing open theoretical issues, as well as possible new observational ones arising from the explosive ...
E. Saridakis +52 more
semanticscholar +1 more source
The DESI Survey Validation: Results from Visual Inspection of the Quasar Survey Spectra
The Astronomical Journal, 2023 A key component of the Dark Energy Spectroscopic Instrument (DESI) survey validation (SV) is a detailed visual inspection (VI) of the optical spectroscopic data to quantify key survey metrics. In this paper we present results from VI of the quasar survey
David M. Alexander +71 more
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Cosmology at high redshift — a probe of fundamental physics [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 An observational program focused on the high redshift ...
N. Sailer +3 more
semanticscholar +1 more source
Performance of the Quasar Spectral Templates for the Dark Energy Spectroscopic Instrument
The Astronomical Journal, 2023 Millions of quasar spectra will be collected by the Dark Energy Spectroscopic Instrument (DESI), leading to a fourfold increase in the number of known quasars.
Allyson Brodzeller +46 more
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Low-Redshift Observational Constraints on Dark Energy Cosmologies [PDF]
Iranian Journal of Astronomy and Astrophysics, 2023 Applying the Markov chain Monte Carlo algorithm and using low-redshift observational data, we put cosmological constraints on dark energy cosmologies. Our main aim is to show the influence of each data sample on the procedure of constraining.
Mohammad Malekjani
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Batteries &Supercaps, Volume 6, Issue 1, January 2023., 2023 We introduce a computer algorithm that incorporates the experience of battery researchers to extract information from experimental data reproducibly. This enables the fitting of complex models that take up to a few minutes to simulate. For validation, we process full‐cell GITT measurements to characterize the diffusivities of both electrodes non ...
Yannick Kuhn +3 more
wiley +1 more source
Observational constraints on warm inflation in loop quantum cosmology [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 By incorporating quantum aspects of gravity, Loop Quantum Cosmology (LQC) provides a self-consistent extension of the inflationary scenario, allowing for modifications in the primordial inflationary power spectrum with respect to the standard General ...
M. Benetti, L. Graef, R. O. Ramos
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Analysis with observational constraints in $$ \Lambda $$Λ-cosmology in f(R, T) gravity [PDF]
The European Physical Journal C, 2018 An exact cosmological solution of Einstein’s field equations (EFEs) is derived for a dynamical vacuum energy in f(R, T) gravity for Friedmann–Lemaitre–Robertson–Walker (FLRW) space-time.
Ritika Nagpal +4 more
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Observational constraints on Gauss–Bonnet cosmology [PDF]
International Journal of Modern Physics D, 2018 We analyze a fully geometric approach to dark energy in the framework of [Formula: see text] theories of gravity, where [Formula: see text] is the Ricci curvature scalar and [Formula: see text] is the Gauss–Bonnet topological invariant.
M. Benetti +4 more
semanticscholar +1 more source