Spirals and vortices seen in large scale cosmic structures

The spiral structures are abundant in the galaxies. The spiral arms appear mostly in the similar way as one observes in the whirlpools, where two contending spirals feed on each other through the mechanism of ejections and merging of outgoing flows with the incoming streams. The arms bifurcate and form fractal pattern as in the atmospheric vortices, and the structures which develop at the core may resemble much to the ones seen inside the vortex wall. They may consist of interacting meso-vortices, or the development of a three armed spiral structure. The interactions at the core generate ejections from the central part. These ejected streams eventually merge with the incoming flows and return back towards the centre once again. The inflow and outflow thus maintain a fine balance. When the vortex receives supply of more and more streams, coming from the surrounding area, it will grow and the spiral arms will wrap more tightly around the centre, as one may see in the case of very intense vortices in the atmosphere. When the supply stops the ejections from the core will disrupt the structure and the vortex will decay. In the cosmos the same thing may be happening. The turbulence churn the gases and create the vortices which appear with two spiral arms. When the arms wrap tightly around the core, the spiral galaxies evolve into elliptical shapes. Inside the cores of such structures, one may see the fractal design. The smaller design remains embedded inside similar design at larger scales. The central part, which is enveloped by the spiral arms, often will develop two lobed structures which forms as the results of merging of two spiral vortices. These phenomena can be seen in laboratiry experiments done with liquid and plasma.

Together with turbulence, the magnetic fields also may appear in shaping the cosmic structures. Where intense magnetic fields may develop, they will cause the formation of collimated jets emerging from the centre. The central core will form double lobed arrangements of shells. Such double lobes may be interlinked in a way to give rise to ring-like structures. The ejections from the centre maintian the material supply to the rings and the lobes, from where material may, in turn, flow towards the centre. In the cosmos there may exist a balance between the inward and outward cascades of material. In the presence of very intense magnetic field the magnetic ejections and accretion may dominate, and dymanics driven by by turbulent kinetic energy may get overwhelmed by such magnetic activities. The overwhelming of the turbulence by the magnetic forces may appear in much smaller and denser structures, like in the formation of stars. In scales of the galaxies and above, the turbulence could be the most dominating power in forming the structures.

	The spiral structure which is seen in the Abell cluster of galaxies.
	Hydra cluster of galaxies seen in x-rays and radio (two images overlaid and enhanced). The jets emerge from the centre.
	The interactions in COMA cluster of galaxies. The images are based on the x-ray data. The vortex can be seen.
	The Perseus supercluster: The image is constructed by overlaying enhanced data taken at different wavelengths. The turbulent structure can be seen
	The spiral shape in Abell 2029 cluster of galaxies.
	The spiral structure of the Andromeda galaxy.
	The vortex at the centre of the Andromeda galaxy.
	The mini-spiral at the heart of the nucleus of the Whirlpool galaxy.
	The enhanced view of the galaxy aat058. The vortex structure is evident.
	The enhanced image of Ngc 5674 shows the way the spiral arms may develop two lobed strcuitures around the core. The similar bifurcation and entanglement of arms connected to the centre appear to characterize the structures of the well developed galaxies.
	The double lobed structures, stacked inside each other as shells inside shells, can be seen in the image enhanced view of the M95 galaxy.

See how hierarchical spiral structures exist in our own galaxy