تقرير
Unveiling the singular dynamics in the cosmic large-scale structure
| العنوان: | Unveiling the singular dynamics in the cosmic large-scale structure |
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| المؤلفون: | Rampf, Cornelius, Frisch, Uriel, Hahn, Oliver |
| المصدر: | Mon.Not.Roy.Astron.Soc. 505 (2021) 1, L90-L94 |
| سنة النشر: | 2019 |
| المجموعة: | Astrophysics Nonlinear Sciences |
| مصطلحات موضوعية: | Astrophysics - Cosmology and Nongalactic Astrophysics, Nonlinear Sciences - Adaptation and Self-Organizing Systems |
| الوصف: | It is known that the gravitational collapse of cold dark matter leads to infinite-density caustics that seed the primordial dark-matter halos in the large-scale structure. The development of these caustics begins, generically, as an almost one-dimensional phenomenon with the formation of pancakes. Focusing on the one-dimensional case, we identify a landscape of non-differentiable, and thus, singular features in the particle acceleration that emerge after the first crossing of particle trajectories. We complement our fully analytical studies by high-resolution simulations and find outstanding agreement, particularly shortly after the first crossing. We develop the methods in one space dimension but outline briefly the necessary steps for the 3D case. Comment: v3: 5+6 pages with 8 figures (v2 was 5+5 pages with 7 figures), published at MNRAS Letters |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1093/mnrasl/slab053 |
| URL الوصول: | http://arxiv.org/abs/1912.00868 |
| رقم الأكسشن: | edsarx.1912.00868 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1093/mnrasl/slab053 |
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