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MOdified Newtonian Dynamics

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acceleration scale a 0<br />

• a 0 is the most important number in MOND<br />

– in the past a 0 is obtained from spirals, such as<br />

rotation curves (e.g., Sanders & McGaugh<br />

2002), baryonic Tully-Fisher relation<br />

(McGaugh 2011, 2012)<br />

– a 0 º 1.2μ10 -10 m/s 2<br />

– first attempt to find a 0 from ellipticals<br />

– image from gravitational lensing and velocity<br />

dispersion of lens

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