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[astro-ph/0604055] Can the Brans-Dicke gravity possibly with

Posted: April 05 2006
by Garth Antony Barber
An interesting paper, will it go the same way as Cooperstock & Lieu?

Note that as well as explaining the flat galactic rotation curves, it has yet to explain galaxy/cluster lensing of distant quasars, and BB nucleosynthesis and be concordant with WMAP etc.

Garth

Re: [astro-ph/0604055] Can the Brans-Dicke gravity possibly

Posted: June 29 2006
by Ruth Lazkoz
Hi,

I have a question. I understand that the velocity curves are obtained from Doppler shift measurements, which are frame invariant quantities.
Should then this Brans-Dicke explanation of the flatness of the curves lead to the same conclusions both in the Einstein or in the Jordan frame?
Put another way, if one were to present the results of this paper in terms of Doppler shift, then one should not care for what frame has been chosen, right?

Thanks,

Ruth
Garth Antony Barber wrote:An interesting paper, will it go the same way as Cooperstock & Lieu?

Note that as well as explaining the flat galactic rotation curves, it has yet to explain galaxy/cluster lensing of distant quasars, and BB nucleosynthesis and be concordant with WMAP etc.

Garth