Evolution of density and velocity profiles of matter in large voids
We analyse the evolution of cosmological perturbations which leads to the formation of large voids in the distribution of galaxies. We assume that perturbations are spherical and all components of the Universe - radiation, matter and dark energy - are continuous media with ideal fluid energy-momentu...
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| Дата: | 2016 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Головна астрономічна обсерваторія НАН України
2016
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| Назва видання: | Advances in Astronomy and Space Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/119947 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Evolution of density and velocity profiles of matter in large voids / M. Tsizh, B. Novosyadlyj // Advances in Astronomy and Space Physics. — 2016. — Т. 6., вип. 1. — С. 28-33. — Бібліогр.: 8 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1199472017-06-11T03:03:14Z Evolution of density and velocity profiles of matter in large voids Tsizh, M. Novosyadlyj, B. We analyse the evolution of cosmological perturbations which leads to the formation of large voids in the distribution of galaxies. We assume that perturbations are spherical and all components of the Universe - radiation, matter and dark energy - are continuous media with ideal fluid energy-momentum tensors, which interact only gravitationally. Equations of the evolution of perturbations in the comoving to cosmological background reference frame for every component are obtained from equations of conservation and Einstein's ones and are integrated by modified Euler method. Initial conditions are set at the early stage of evolution in the radiation-dominated epoch, when the scale of perturbation is mush larger than the particle horizon. Results show how the profiles of density and velocity of matter in spherical voids with different overdensity shells are formed 2016 Article Evolution of density and velocity profiles of matter in large voids / M. Tsizh, B. Novosyadlyj // Advances in Astronomy and Space Physics. — 2016. — Т. 6., вип. 1. — С. 28-33. — Бібліогр.: 8 назв. — англ. 2227-1481 DOI:10.17721/2227-1481.6.28-33 http://dspace.nbuv.gov.ua/handle/123456789/119947 en Advances in Astronomy and Space Physics Головна астрономічна обсерваторія НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
We analyse the evolution of cosmological perturbations which leads to the formation of large voids in the distribution of galaxies. We assume that perturbations are spherical and all components of the Universe - radiation, matter and dark energy - are continuous media with ideal fluid energy-momentum tensors, which interact only gravitationally. Equations of the evolution of perturbations in the comoving to cosmological background reference
frame for every component are obtained from equations of conservation and Einstein's ones and are integrated by modified Euler method. Initial conditions are set at the early stage of evolution in the radiation-dominated epoch, when the scale of perturbation is mush larger than the particle horizon. Results show how the profiles of density and velocity of matter in spherical voids with different overdensity shells are formed |
| format |
Article |
| author |
Tsizh, M. Novosyadlyj, B. |
| spellingShingle |
Tsizh, M. Novosyadlyj, B. Evolution of density and velocity profiles of matter in large voids Advances in Astronomy and Space Physics |
| author_facet |
Tsizh, M. Novosyadlyj, B. |
| author_sort |
Tsizh, M. |
| title |
Evolution of density and velocity profiles of matter in large voids |
| title_short |
Evolution of density and velocity profiles of matter in large voids |
| title_full |
Evolution of density and velocity profiles of matter in large voids |
| title_fullStr |
Evolution of density and velocity profiles of matter in large voids |
| title_full_unstemmed |
Evolution of density and velocity profiles of matter in large voids |
| title_sort |
evolution of density and velocity profiles of matter in large voids |
| publisher |
Головна астрономічна обсерваторія НАН України |
| publishDate |
2016 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/119947 |
| citation_txt |
Evolution of density and velocity profiles of matter in large voids / M. Tsizh, B. Novosyadlyj // Advances in Astronomy and Space Physics. — 2016. — Т. 6., вип. 1. — С. 28-33. — Бібліогр.: 8 назв. — англ. |
| series |
Advances in Astronomy and Space Physics |
| work_keys_str_mv |
AT tsizhm evolutionofdensityandvelocityprofilesofmatterinlargevoids AT novosyadlyjb evolutionofdensityandvelocityprofilesofmatterinlargevoids |
| first_indexed |
2023-10-18T20:35:49Z |
| last_indexed |
2023-10-18T20:35:49Z |
| _version_ |
1796150615320035328 |