Results 61 to 70 of about 92,572 (312)
The ΛCDM-NG Cosmological Model: A Possible Resolution of the Hubble Tension
The Astrophysical JournalWe offer a cosmological model based on conventional general relativity (no speculative physics) that may resolve the Hubble tension. A reanalysis of the foundation of the Lambda-CDM model shows that general relativity alone does not specify what fraction
Richard J. Cook
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The Aemulus Project. V. Cosmological Constraint from Small-scale Clustering of BOSS Galaxies
The Astrophysical Journal, 2023 We analyze clustering measurements of BOSS galaxies using a simulation-based emulator of two-point statistics. We focus on the monopole and quadrupole of the redshift-space correlation function, and the projected correlation function, at scales of 0.1 ...
Zhongxu Zhai +8 more
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f(T) cosmology against the cosmographic method: A new study using mock and observational data [PDF]
, 2022 M Sabiee +2 more
openalex +1 more source
How accurately can we measure the hydrogen 2S->1S transition rate from the cosmological data?
, 2012 Recent progress in observational cosmology, and especially the forthcoming PLANCK mission data, open new directions in so-called precision cosmology. In this paper we illustrate this statement considering the accuracy of cosmological determination of the
Burigana, Carlo +4 more
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Cosmological Simulations of Multi-Component Cold Dark Matter [PDF]
, 2014 The nature of dark matter is unknown. A number of dark matter candidates are quantum flavor-mixed particles but this property has never been accounted for in cosmology.
Medvedev, Mikhail V.
core +2 more sources
Integrating multimodal data and machine learning for entrepreneurship research
Strategic Entrepreneurship Journal, EarlyView.Abstract Research Summary Extant research in neuroscience suggests that human perception is multimodal in nature—we model the world integrating diverse data sources such as sound, images, taste, and smell. Working in a dynamic environment, entrepreneurs are expected to draw on multimodal inputs in their decision making.
Yash Raj Shrestha, Vivianna Fang He
wiley +1 more source
Revisiting the Oldest Stars as Cosmological Probes: New Constraints on the Hubble Constant
The Astrophysical Journal, 2023 Despite the tremendous advance of observational cosmology, the value of the Hubble constant ( H _0 ) is still controversial (the so-called “Hubble tension”) because of the inconsistency between local/late-time measurements and those derived from the ...
Andrea Cimatti, Michele Moresco
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Journal of Research in Science Teaching, EarlyView.ABSTRACT While understanding the nature of science (NOS) is recognized as a key component of science education because of its potential benefits in nurturing scientific literacy, there is currently limited knowledge on how NOS learning can be supported by teachers' ongoing, in‐the‐moment assessment in the classroom.
Wonyong Park +2 more
wiley +1 more source
The Astrophysical JournalType Ia supernovae (SNe Ia) have been essential for probing the nature of dark energy; however, most SN analyses rely on the same low-redshift sample, which may lead to shared systematics.
Maria Acevedo +14 more
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Late Decaying Dark Matter, Bulk Viscosity and the Cosmic Acceleration
, 2008 We discuss a cosmology in which cold dark matter begins to decay into relativistic particles at a recent epoch (z < 1). We show that the large entropy production and associated bulk viscosity from such decays leads to an accelerating cosmology as ...
A. G. Doroshkevich +11 more
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