Bootes “void” is a region centred at right asc. 14h50m and declination +46 deg in the North Galactic hemisphere lying in the constellation of Bootes. It is about 25 deg across in size. In figure 1 the region of the “void” above alpha Bootes is marked by a circular ring.
One finds a very few galaxies in this region giving it the name as “big void”. There are some foreground stars through which we look at this distant “void”. Outside this region of the void several clusters of galaxies appear. Among them most well known among them are Coma Cluster, Bootes supercluster, Corona Borealis supercluster and Hercules supercluster and Draco Hercules supercluster as shown in figure 2 below.
The “void” region is also marked in the structure shown in figure 3 which occupies a huge area of the entire North Galactic sky. Most interestingly the ring encloses the central part of a dark three-
Lonely galaxies in the centre
The triple spiral structure indicates that any idea of the formation of the “big void” by the process of merging of smaller voids (as some scientists have proposed) can not be entertained. Instead it may truly indicate a profound mechanism of creation of the universe from the dark realm. The most interesting part could be the very central part of the triple armed dark structure which is marked by the inner circle n figure 4 which is above the star beta Bootes.
A few lonely galaxies are observed inside this inner circle . Figure 5 reveals an underlying structure inside the dark ring. The positions of the majority of galaxies with apparent magnitude less than +18 are marked in that image.
The dark structure indicates that it could be a turbulent cloud where galaxies are taking birth (similar to stars being born inside dark clouds). The galaxies are mainly concentrated in the core of this structure around an empty spot (slightly right to the centre of the ring).
Several of these galaxies around the core appear to be creating smaller structures as ejected objects as shown in figures 6.
These ejecting galaxies consist of only a central core without spiral arms (as in spiral galaxies), or spherical bulges as seen in elliptical galaxies. Apart from few such galaxies ,which appear brighter, the galaxies in the central area are very dim and they appear to exist in their early stage of formation (with irregular nuclei or widely open bar-
The structures of the nuclei for the more evolved objects among these early galaxies are shown in figure 8.
There is no well formed galaxy in this central part of the “void”. The new galaxies may form here and move outwards towards the outer ring while evolving towards a more well formed spiral structure on the way as illustrated in figure 9.
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BOOTES VOID: More empty part of the universe in a dark realm
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Figure 4
Figure 5
Figure 6
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Figure 8
