Results 51 to 60 of about 3,102,022 (309)

The horizon of the McVittie black hole: on the role of the cosmic fluid modeling

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In this paper, we investigate the existence and time evolution of the cosmological and event horizons in a McVittie universe whose expansion is driven by the Redlich–Kwong, (Modified) Berthelot, Dieterici, and Peng–Robinson fluids, respectively.
Daniele Gregoris, Yen Chin Ong, Bin Wang
doaj   +1 more source

Little Ado about Everything: ηCDM, a Cosmological Model with Fluctuation-driven Acceleration at Late Times

open access: yesThe Astrophysical Journal, 2023
We propose a model of the Universe (dubbed η CDM) featuring a controlled stochastic evolution of the cosmological quantities that is meant to render the effects of small deviations from homogeneity/isotropy on scales of 30–50 h ^−1 Mpc at late cosmic ...
Andrea Lapi   +6 more
doaj   +1 more source

Synthetic nebular emission from massive galaxies - I: origin of the cosmic evolution of optical emission-line ratios [PDF]

open access: yes, 2017
Galaxies occupy different regions of the [OIII]$\lambda5007$/H$\beta$-versus-[NII]$\lambda6584$/H$\alpha$ emission-line ratio diagram in the distant and local Universe.
M. Hirschmann   +6 more
semanticscholar   +1 more source

Cosmic Evolutionary Philosophy and a Dialectical Approach to Technological Singularity

open access: yesInformation, 2018
The anticipated next stage of human organization is often described by futurists as a global technological singularity. This next stage of complex organization is hypothesized to be actualized by scientific-technic knowledge networks.
Cadell Last
doaj   +1 more source

On the evolution of the cosmic ionizing background [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2014
We study the observed cosmic ionizing background as a constraint on the nature of the sources responsible for the reionization of the Universe. In earlier work, we showed that extrapolations of the Ultra-Violet Luminosity Function (LF) of Lyman Break Galaxies (LBGs) at fixed Lyman continuum photon escape fraction are not able to reproduce the redshift ...
Fontanot, Fabio   +4 more
openaire   +2 more sources

De re metallica: the cosmic chemical evolution of galaxies [PDF]

open access: yesThe Astronomy and Astrophysics Review, 2018
The evolution of the content of heavy elements in galaxies, the relative chemical abundances, their spatial distribution, and how these scale with various galactic properties, provide unique information on the galactic evolutionary processes across the ...
R. Maiolino, F. Mannucci
semanticscholar   +1 more source

Refueling the Magic Furnace: Kilonova 2017 Rewrites the Story of Element Origins

open access: yesJournal of Big History, 2018
For more than half a century, we have understood element creation in the stars—described in Marcus Chown’s colorful image as “the magic furnace.” From 1958 until 2017, supernova explosions were thought to be the primary site of element creation above ...
Barry Woods
doaj   +1 more source

Cosmological Properties of the Cosmic Web

open access: yesPhysical Sciences Forum, 2023
In this paper, we study the dynamical and statistical properties of the cosmic web and investigate their ability to infer the corresponding cosmological model.
Majd Shalak, Jean-Michel Alimi
doaj   +1 more source

Proteogenomic characterization of cholangiocarcinoma

open access: yesHepatology, EarlyView., 2022
Proteogenomic characterization of cholangiocarcinoma with therapeutic strategies Abstract Background and Aims Cholangiocarcinoma (CCA) is a highly heterogeneous cancer with limited understanding and few effective therapeutic approaches. We aimed at providing a proteogenomic CCA characterization to inform biological processes and treatment ...
Mengjie Deng   +18 more
wiley   +1 more source

Big History as Synthesis of the Cosmo-Bio-Anthropological Evolution: The Beginning of Universe and the Emergence of Life

open access: yesPensamiento. Revista de Investigación e Información Filosófica, 2019
In this paper we discuss the hot topic of Big History, doing a brief description of the evolution: from the cosmic evolution to the biological evolution.
Ricard Casadesús Castro
doaj   +1 more source

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