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Dynamical evolution of voids with surrounding gravitational tidal field
- Source :
- Monthly Notices of the Royal Astronomical Society. 503:2804-2813
- Publication Year :
- 2021
- Publisher :
- Oxford University Press (OUP), 2021.
-
Abstract
- The void ellipticity distribution today can be well explained by the tidal field. Going a step further from the overall distribution, we investigate individuality on the tidal response of void shape in non-linear dynamical evolution. We perform an N-body simulation and trace individual voids using particle ID. The voids are defined based on Voronoi tessellation and watershed algorithm, using public code VIDE. A positive correlation is found between the time variation of void ellipticity and tidal field around a void if the void maintains its constituent particles. Such voids tend to have smaller mass densities. Conversely, not a few voids significantly deform by particle exchange, rather than the tidal field. Those voids may prevent us from correctly proving a quadrupole field of gravity out of a void shape.<br />Comment: 10 pages, 12 figures
- Subjects :
- Physics
Void (astronomy)
Gravity (chemistry)
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Field (physics)
FOS: Physical sciences
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Mechanics
Positive correlation
Gravitation
Space and Planetary Science
Quadrupole field
Particle
Voronoi diagram
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- ISSN :
- 13652966 and 00358711
- Volume :
- 503
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Accession number :
- edsair.doi.dedup.....2b170df90527a6b6f387bffcd3e2bf42