The 2DF survey seems to have finally found a limit to structure sizes at a fraction of a Gpc

The 2DF survey seems to have finally found a limit to structure sizes at a fraction of a Gpc

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The 2DF survey seems to have finally found a limit to structure sizes at a fraction of a Gpc (shown below). It is important that a survey used to study structures on a particular scale span a region much larger than this scale; previous surveys have shown structures up to the size which could be detected. In fact, a result of that kind is in accord with a purely fractal distribution in which no particular scale length is significant, as was in fact brought up in Mandelbrot's manifesto Form, Chance, and Dimension with some citations to its possible role in the galaxy distribution. Therefore, it is really important to see
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Unformatted text preview: whether there is in fact a scale on which structures do not occur (500 Mpc or so, confirmation came from the that the 2dF group was working so hard to beat to this result). Is this where the cosmological principle's uniformity and isotropy take over? Straightforward cosmological schemes do predict upper limits to the scales of perturbations that could have reached significant amplitudes by now, but after seeing the notion of inflation show how to grow perturbations once thought to be impossibly large, having data always beats having pure models. .....
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The 2DF survey seems to have finally found a limit to structure sizes at a fraction of a Gpc

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