astrophysical twin universe and cosmology Ghost matter astrophysical matter. 5: Results of 2D numerical simulations. VLS. About a possible scheme for galaxy formation. (p7)
4) A possible scheme for galaxy formation
After the formation of the entire pattern, the ratio r*/r varies between 3 and 5 in the cells. One can imagine that the density and temperature increase in the cell matter, leading to a loss of radiative energy. The surrounding ghost matter would not be able to absorb this radiation, due to its lack of interaction with it, for simple geometrical reasons [3]. The 2D structure of these matter bubbles is then optimal for this energy loss, and thus allows gravitational instability to occur in this region. Thus, galaxies could appear, located in the voids of a distribution of hot ghost matter, which would penetrate into the intergalactic space. Figures 19, 20 and 21 are not from numerical simulations, but are simply hand-drawn schematic sketches, in order to illustrate the basic idea.
Fig.19 :** First phase (schematic) : Compression of matter in the very large structure due to the repulsive effect of the clumps of ghost matter.**
**Fig. 20: Second phase (schematic) : Birth of young galaxies in the matter cooled down radiatively.
. Fig. 21: Third phase (schematic) : The young galaxies embedded in hot ghost matter. **Density contrast *r/r » 4 . . This idea was initially presented in references [1] and [10]. The counter gravitational pressure exerted by the surrounding ghost matter on the young galaxies would contribute to their confinement. According to this model, we could then compare the young galaxies to oil drops suspended in water. The fact of being immersed in a fluid that confines them does not prevent their interaction or cannibalism, as suggested by the (schematic) figure 23.
Fig. 22 :Schematic possible merging of two galaxies embedded in hot ghost matter.
The 3D simulation of such interactions would require a powerful computer. At this stage, it is only a speculative idea. We can attempt to study the model of a confined galaxy surrounded by ghost matter.