Dark Matter Detection: Controversy Grows

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SUMMARY

The forum discussion centers on the controversy surrounding dark matter detection, specifically referencing the paper available at http://arxiv.org/abs/astro-ph/0405282. The paper presents a model-independent annual modulation signature for dark matter particles in the galactic halo, based on results from seven annual cycles. A key point raised is the challenge of distinguishing dark matter signals from variations in the gravitational constant (G), as proposed by Moffat, which could produce similar detection signatures.

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The means of detection is given in the following quote from thatr paper:

"the model independent annual modulation signature for Dark Matter particles in the galactic halo"

They show results for seven annual cycles.

My question is how can we distinguish between Dark Matter and the variations of G (and no dark matter) proposed by Moffat. It seems that spatial variations in G would produce the same signature.
 

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