There is no black-hole at the position of the strong radio source SgrA* at the galactic centre

By studying the motions of the stars around the strong radio source SgrA*, in a paper published in Nature in 2003 it had been concluded that a black-hole exists at that position. The motions of several other stars were interpreted as following Keplerian orbits around the black-hole. These stars were believed to take many years to complete their orbital paths. Except one star, the Keplerian paths could not be confirmed before the observations came to an end. The star called S2, were seen to complete about two-third of its orbital path. The motion of this star was interpreted as the solid ground for believing in the existence of a black-hole.

The same data, when reanalyzed, reveal a knotty structure at the position of the so-called black-hole. The star S2 appears to be rotating around that knot structure - very similar to what one would expect in the case of a double star system. The motions of other stars follow a three armed spiral structure. Violent ejections occur from the heart of the spiral structure. When the ejected material slam on the surrounding gases they create shocks and thus generate x-ray emissions. The places where such strong x-ray emissions are seen contain huge helium stars. The helical motions of gases can be seen to be emerging from the ejection mouth, which is embodied inside a spiral form.

	There exists a spiral structure at the very centre of the galaxy where a black-hole is supposed to lie. The position of SgrA* is berween the arrows.
	The positions of the stars at the centre of the galaxy as in 20 June 2002. They align themesleves along the spiral arms.
	The paths and the directions of motions of the stars.
	There exists a structure at the position of the so-called black-hole, which lies at the right side of the picture (a black traingle is to its right).
	The structure seen at the position of the so-called black-hole.
	There exists a knot structure at the radio-source SgrA*. The star S2 moves around this body. The S2 (southern part of it) is visible at the upper left corner of the picture.

See the knot formation at the centres of cosmic structures