The Discovery of the Expansion of the Universe

Grøn, Øyvind

doi:10.3390/galaxies6040132

Cited by 2 publications

(1 citation statement)

References 48 publications

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“…Soon, after that George Lemaitre (see, Fig. 3) considered a similar problem to earlier Friedmann's considerations and derived the redshift-distance relation which is called now as the Hubble law [7,8] which was found based on observational data [9] using redshifts for selected galaxies evaluated by Slipher [10] (interesting discussions of historical aspects of these discoveries are given in [11][12][13][14]). Five years ago at the XXX General Assembly of the the International Astronomical Union in was proposed to call the expansion of the Universe as the Hubble -Lemaitre law (instead of the Hubble law) [15].…”

Section: Early Cosmological Studiesmentioning

confidence: 92%

Constraints on a Tidal Charge of the Supermassive Black Hole in M87* with the EHT Observations in April 2017

Zakharov

2022

Universe

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More than two years ago the Event Horizon Telescope collaboration presented the first image reconstruction around the shadow for the supermassive black hole in M87*. It gives an opportunity to evaluate the shadow size. Recently, the Event Horizon Telescope collaboration constrained parameters (“charges”) of spherical symmetrical metrics of black holes from an estimated allowed interval for shadow radius from observations of M87* in 2017. Earlier, analytical expressions for the shadow radius as a function of charge (including a tidal one) in the case of Reissner–Nordström metric have been obtained. Some time ago, Bin-Nun proposed to apply a Reissner–Nordström metric with a tidal charge as an alternative to the Schwarzschild metric in Sgr A*. If we assume that a Reissner–Nordström black hole with a tidal charge exists in M87*, therefore, based on results of the shadow size evaluation for M87* done by the Event Horizon Telescope collaboration we constrain a tidal charge. Similarly, we evaluate a tidal charge from shadow size estimates for Sgr A*.

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Section: Early Cosmological Studiesmentioning

confidence: 92%

Constraints on a Tidal Charge of the Supermassive Black Hole in M87* with the EHT Observations in April 2017

Zakharov

2022

Universe

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Dark Energy as an Information Field and Attribute of the Universe

Bogomolov¹

2022

Dark Matter - Recent Observations and Theoretical Advances

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The hypothesis that information is the same attribute of the Universe as space, time and matter, which appeared after the Big Bang and its carrier is the dark energy, is proposed. We assume that along with the development of matter and space–time continuum the development of information took place, i.e. its accumulation and complication of forms of its realization in the Universe, and the formation of information field. The proposed concept is close to or coincides with the bio-centrism concept. They substantiate the connection between information and dark energy from philosophical and physical positions. Including properties of “black holes” of the Universe. The rate of increase of knowledge and volumes of created information in the process of human evolution is very similar to the rate of increase of “mass” of dark energy of the Universe. They concluded that structured information in the information field, which forms the noosphere or thinking shell, plays a decisive role both in life of an individual and humanity. Comparison of quantum properties of information field of the Universe (noosphere) and dark energy may lead to new discoveries of the essence of life and the Universe. Studying and mastering of noosphere will mean the transition of humanity to a cosmic stage of its development.

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The Discovery of the Expansion of the Universe

Cited by 2 publications

References 48 publications

Constraints on a Tidal Charge of the Supermassive Black Hole in M87* with the EHT Observations in April 2017

Constraints on a Tidal Charge of the Supermassive Black Hole in M87* with the EHT Observations in April 2017

Dark Energy as an Information Field and Attribute of the Universe

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