| Autor: |
Tashiro, Tohru |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Physics Letters A, Volume 383, Issue 26 (2019) 125829 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1016/j.physleta.2019.07.017 |
| Popis: |
We investigate the quasi-equilibrium state of one-dimensional self-gravitating systems. If the null virial condition is satisfied at initial time, it is found that the number density around the center of the system at the quasi-equilibrium state has the universality similar to two- and three-dimensional self-gravitating systems reported in \cite{Tashiro16,Tashiro10}. The reason why the null virial condition is sufficient for the universality is unveiled by the envelope equation. We present a phenomenological model to describe the universal structure by using a special Langevin equation with a distinctive random noise to self-gravitating systems. Additionally, we unveil a mechanism which decides the radius of the system. |
| Databáze: |
arXiv |
| Externí odkaz: |
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