Tutte le notizie di:
| **archivio**

Registrati o accedi

Articolo n° 744052 del 19 Dicembre 2022 delle ore 15:58

This is simply not merely posited throughout the so-called “Important Model of Cosmology”

Author’s reaction: FLRW models is actually obtained from GR because of the provided count and you may radiation was marketed evenly throughout the space which they establish. What’s the you will find, as an alternative, brand new ab initio exposure away from a countless universe, and this contradicts the brand of a restricted increasing world which is useful the rationale from other points.

Reviewer’s continued feedback: Precisely what the journalist writes: “. filled up with an excellent photon gasoline inside an imaginary box whoever regularity V” was wrong because the photon fuel isn’t restricted to a great finite frequency during history scattering.

Author’s response: I consider Ryden?s textbook as representative of the present standard approach to cosmology (checked for orthodoxy by several authorities in the field), and it says: “Consider a region of volume V which expands at the same rate as the universe, so that V prop. a(t) 3 . The blackbody radiation in the volume can be thought as a photon gas with energy density ?_{?} = ?T 4 .” This is model 4 – neither model 1 nor model 5.

Reviewer’s feedback: A touch upon the newest author’s reaction: “. an enormous Screw design was discussed, additionally the imaginary container does not occur in the wild. Despite this, the new calculations are carried out as if it was introduce. Ryden here just uses a lifestyle, however, this is basically the cardinal error We talk about throughout the next passing under Design dos. While there is in reality no such as for instance field. ” In fact, this really is another mistake from “Design 2” defined by the blogger. However, you do not have to have such as for instance a package in the “Simple Brand of Cosmology” since, in the place of during the “Design 2”, amount and you may rays fill the broadening universe entirely.

Author’s reaction: One can possibly avoid the relic radiation blunder by simply following Tolman’s need. That is clearly you’ll be able to in the universes with no curve in the event that these types of had been adequate during the start of big date. However, this problem indicates currently a getting rejected of the notion of good cosmogonic Big-bang.

Reviewer’s opinion: Not one of your four “Models” corresponds to brand new “Important Make of Cosmology”, therefore the simple fact that they are falsified has no results into the if the “Basic Make of Cosmology” normally expect the latest cosmic microwave oven history.

Author’s response: Strictly speaking (I did not do so and allowed the common usage), there is no “standard model of cosmology” at all. __contradictory__ models, which are used for separate aspects. The first one is the prototypical Big Bang model (model 1). This model suggests a cosmic redshift and a last scattering surface. However, it predicts the radiation from the latter to be invisible by now. In this model, the universe has a constant finite mass and it must http://www.datingranking.net/marriagemindedpeoplemeet-review expand at c in order not to hinder radiation. The second one (model 4) is a Big Bang model that is marred by the relic radiation blunder. It fills, at any given cosmic time after last scattering, a volume that is __reduced__ than that in model 1 (but equal to that in model 2). This is how the CMB properties are modeled, such as the evolution of its temperature as T ~ 1/a(t) (eq. 6.3 in Peebles, 1993) from 3000 K to 2.7 K. The third one (model 5) is an Expanding View model, which uses to be introduced tacitly and fills a volume that is __big__ than that in model 1. It appears to be the result of using distance measures in whose calculation the spatial limitation of the universe given by the Big Bang model had been and still is ignored by mistake. Then only the temporal limitation remains. It may be that similar distance measures are actually valid in a tenable cosmology (no big bang), but in this case the CMB and its homogeneity must have a different origin.

CERCAarticoli

Cerca nel sito:

Cerca per data:

Cerca per cittá: