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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| Published in: | Advances in Astronomy and Space Physics |
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| Date: | 2016 |
| Main Authors: | , |
| Format: | Article |
| Language: | English |
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Головна астрономічна обсерваторія НАН України
2016
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/119947 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | 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. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862573786103021568 |
|---|---|
| author | Tsizh, M. Novosyadlyj, B. |
| author_facet | Tsizh, M. Novosyadlyj, B. |
| 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. |
| collection | DSpace DC |
| container_title | Advances in Astronomy and Space Physics |
| 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
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| first_indexed | 2025-11-26T08:17:46Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-119947 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 2227-1481 |
| language | English |
| last_indexed | 2025-11-26T08:17:46Z |
| publishDate | 2016 |
| publisher | Головна астрономічна обсерваторія НАН України |
| record_format | dspace |
| spelling | Tsizh, M. Novosyadlyj, B. 2017-06-10T13:14:24Z 2017-06-10T13:14:24Z 2016 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 https://nasplib.isofts.kiev.ua/handle/123456789/119947 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 en Головна астрономічна обсерваторія НАН України Advances in Astronomy and Space Physics Evolution of density and velocity profiles of matter in large voids Article published earlier |
| spellingShingle | Evolution of density and velocity profiles of matter in large voids Tsizh, M. Novosyadlyj, B. |
| title | 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_short | Evolution of density and velocity profiles of matter in large voids |
| title_sort | evolution of density and velocity profiles of matter in large voids |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/119947 |
| work_keys_str_mv | AT tsizhm evolutionofdensityandvelocityprofilesofmatterinlargevoids AT novosyadlyjb evolutionofdensityandvelocityprofilesofmatterinlargevoids |