by Boris SHUSTOV, RAS Corresponding Member, Director of the Institute of Astronomy, Moscow The hidden mass idea implies that we live in the Universe where unobservable matter dominates. The nature of this matter is obscure and may be quite unusual. But the hidden mass is perceived by most astronomers as a quaint but a plainly established thing. Since different and not always consistent definitions of this unobservable component of the Universe occur even in the literature, I shall use what appear to me as the most cogent definitions. The hidden mass (HM) is matter which exists in the Universe but is unobservable. It consists of two different components: (1) Dark matter (DM) of the unknown nature whose existence is manifest only implicitly through gravitational action on different objects of the Universe and (2) baryonic dark matter (BDM) which is just common matter, unobservable though due to our limited possibilities. Physicists and astronomers discuss a wide range of possibilities in explaining the physical nature of hidden mass carriers--from hypothetic elementary particles down to dwarf stars and black holes. The masses of candidate carriers differ by more than 70 orders of magnitude. The main question about dark matter is quite straightforward: What is it? So far there is no generally accepted and cogent answer despite the eighty-year history of research. Only one thing is obvious: DM exceeds BDM greatly. Baryonic matter is just common substance which forms us and the world we live in. The nature of baryonic matter and many of its characteristics are studied mostly (with respect to astronomical objects anyway), by observation methods. We observe such matter in the стр. 54 Fig. 1. Microphotometer curve, i.e. radial brightness distribution (upper panel) and the galaxy rotation curve NGC~3198 obtained by observations of neutral hydrogen at 21 cm (lower panel). The rotation curve is resolved into three compon ... Читать далее

Эта публикация была размещена на Либмонстре в другой стране и показалась интересной редакторам.

Полная версия: https://biblio.kz/m/articles/view/HIDDEN-MASS-WHAT-IS-IT
Таджикистан Онлайн · 310 days ago 0 395
Professional Authors' Comments:
Order by: 
Per page: 
  • There are no comments yet
Guest comments

Who Like this
Likes · Dislikes
0 votes
Таджикистан Онлайн
Душанбе, Tajikistan
20.11.2021 (310 days ago)
Permanent link to this publication:


© library.tj

Libmonster, International Network:

Actual publications:

Libmonster Partners

Actual publications:


Latest BOOKS:

Actual publications:

LIBRARY.TJ is a Tajik open digital library, repository of author's heritage and archive

Register & start to create your original collection of articles, books, research, biographies, photographs, files. It's convenient and free. Click here to register as an author. Share with the world your works!

Watch out for new publications: News only: Chat for Authors:

About · News · For Advertisers · Donate to Libmonster

Digital Library of Tajikistan ® All rights reserved.
2018-2022, LIBRARY.TJ is a part of Libmonster, international library network (open map)


US-Great Britain Sweden Serbia
Russia Belarus Ukraine Kazakhstan Moldova Tajikistan Estonia Russia-2 Belarus-2

Create and store your author's collection at Libmonster: articles, books, studies. Libmonster will spread your heritage all over the world (through a network of branches, partner libraries, search engines, social networks). You will be able to share a link to your profile with colleagues, students, readers and other interested parties, in order to acquaint them with your copyright heritage. After registration at your disposal - more than 100 tools for creating your own author's collection. It is free: it was, it is and always will be.

Download app for smartphones