Using Globular Clusters to Test Newton?s Law of Gravityy

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dc.creatorScarpa, Riccardo
dc.creatorMarconi, Gianni
dc.creatorGilmozzi, Roberto
dc.date2003-08-24
dc.date.accessioned2026-07-07T02:09:18Z
dc.date.available2026-07-07T02:09:18Z
dc.descriptionNew measurements of the velocity dispersion of the globular cluster omega Centauri allow to trace its gravitational potential down to an acceleration of 8e-9 cm/s/s. It is found that the dispersion profile remains flat well inside the tidal radius as soon as the acceleration of gravity approaches a_0, a result that finds its simplest explanation within the contest of Modified Newtonian dynamics. A similar behavior is observed in the globular cluster M15 showing this is not a peculiar features of omega Centauri. This result is surprising and suggestive of a failure of Newton's law at low accelerations.
dc.descriptionPresented at the IAU220 symposium: "Dark matter in galaxies". Sydney, August 2003
dc.identifierhttps://arxiv.org/abs/astro-ph/0308416
dc.identifierhttp://arxiv.org/abs/astro-ph/0308416
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/6381
dc.subjectAstrophysics
dc.titleUsing Globular Clusters to Test Newton?s Law of Gravityy
dc.typetext

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