The first compact objects in the MOND model
| dc.creator | Stachniewicz, Slawomir | |
| dc.creator | Kutschera, Marek | |
| dc.date | 2001-10-22 | |
| dc.date.accessioned | 2026-07-07T02:00:56Z | |
| dc.date.available | 2026-07-07T02:00:56Z | |
| dc.description | We trace the evolution of a spherically symmetric density perturbation in the MOdified Newtonian Dynamics (MOND) model. The background cosmological model is a $Λ$-dominated, low-$Ω_b$ Friedmann model with no Cold Dark Matter. We include thermal processes and non-equilibrium chemical evolution of the collapsing gas. We find that the first density perturbations which collapse to form luminous objects have mass $\sim 10^5 M_{\odot}$. The time of the final collapse of these objects depends mainly on the value of the MOND acceleration $a_0$ and also on the baryon density $Ω_b$. For the "standard" value $a_0=1.2\times 10^{-8}$ cm/s$^2$ the collapse starts at redshift $z \sim 160$ for $Ω_b=0.05$ and $z \sim 110$ for $Ω_b=0.02$. | |
| dc.description | 12 pages, 7 figures, talk presented at the XXV School of Theoretical Physics, Ustron, Poland, 9-16 Sept. 2001, to appear in Acta Physica Polonica B | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0110484 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0110484 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/3580 | |
| dc.subject | Astrophysics | |
| dc.title | The first compact objects in the MOND model | |
| dc.type | text |