Results 121 to 130 of about 54,682 (254)

Cosmic archeology with the Cosmic Microwave Background Radiation

open access: yes, 2010
A cosmologia é uma ciência relativamente jovem, e que permanentemente requer observações que sustentem as previsões teóricas dos cientistas que trabalham nessa área. A Radiação Cósmica de Fundo em microondas (RCFM) é uma das observações utilizadas para isso, sendo a mais antiga fonte de observação direta do Universo de que dispomos e uma evidência ...
Souza, Carlos Alexandre Wuensche de   +3 more
openaire   +1 more source

Flash Ionization of the Early Universe by Population III.1 Supermassive Stars

open access: yesThe Astrophysical Journal Letters
The Population III.1 theory for supermassive black hole formation predicts that a substantial fraction of the early Universe was ionized by supermassive stars at redshifts z  ∼ 20–30, an era we refer to as “The Flash.” This is followed by recombination ...
Jonathan C. Tan
doaj   +1 more source

Alleviating H 0 and S 8 Tensions Simultaneously in K-essence Cosmology

open access: yesThe Astrophysical Journal
The present work begins by examining the early-Universe inflationary epoch of a special K-essence model, which incorporates a linear coupling term between the scalar field potential and the canonical Lagrangian.
Seyed Ali Hosseini Mansoori   +1 more
doaj   +1 more source

On the cosmic microwave background radiation

open access: yes, 2017
In this article we will try to give a pale idea to the reader of what could be the Cosmic Microwave Background (RCFM) that, according to the traditional Big Bang model, was generated by a primordial explosion. With this purpose we find it very important to present a brief historical summary of how the Microcosm, based on the Standard Model of ...
Bassalo, José Maria Filardo   +1 more
openaire   +1 more source

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