Another nail in the MOND coffin?

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SUMMARY

The discussion centers on the relativistic pulsar-white dwarf binary PSR J1738+0333, which serves as a critical test for scalar-tensor gravity theories. The findings from the study, detailed in the paper "The most stringent test of scalar-tensor gravity," indicate that this binary system imposes strong constraints on alternatives to General Relativity (GR), particularly the Generalized Brans-Dicke scalar-tensor theory. The results highlight that while some theories remain viable, they often rely on adjustable parameters that allow them to closely approximate GR.

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Chronos
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The relativistic pulsar-white dwarf binary PSR J1738+0333 II. The most stringent test of scalar-tensor gravity
http://arxiv.org/abs/1205.1450
 
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Not only that, it also strongly constrains GR alternatives like the Generalized Brans-Dicke scalar-tensor theory. It's one of the few survivors, and that's because it has some fudge factors that can make it arbitrarily close to GR.
 

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