# A non-radial two-body collapse model (TBCM) for gravitational collapse of dark matter in expanding background and generalized stable clustering hypothesis (GSCP)

@inproceedings{Xu2021ANT, title={A non-radial two-body collapse model (TBCM) for gravitational collapse of dark matter in expanding background and generalized stable clustering hypothesis (GSCP)}, author={Zhijie Xu}, year={2021} }

Analytical tools are valuable to study the self-gravitating collisionless flow in expanding background (SG-CFD). However, it is extremely hard to find analytical solutions for highly nonlinear structure formation. Only a few simple but powerful tools exist so far. Two examples are the spherical collapse model (SCM) and stable clustering hypothesis (SCH). This paper presents another analytical tool based on an elementary step of halo mass accretion/cascade, i.e. a two-body collapse model (TBCM…

## 2 Citations

Mass functions of dark matter halos from maximum entropy distributions for self-gravitating collisionless flow

- Physics
- 2021

The halo-mediated inverse mass cascade is a key feature of the intermediate statistically steady state for self-gravitating collisionless flow (SG-CFD). A broad spectrum of halos and halo groups are…

Inverse and direct cascade of kinetic and potential energy for self-gravitating collisionless dark matter flow and effects of halo shape on energy cascade

- Physics
- 2021

Halo-mediated inverse mass cascade and associated energy cascade are key features to understand self-gravitating collisionless dark matter flow (SG-CFD). This paper formulates the energy cascade that…

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