Testing Theories of Gravity Using Galactic Center Stars

Details Testing Theories of Gravity Using Galactic Center Stars Testing Theories of Gravity Using Galactic Center Stars

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aps..aprq11003m&link_type=abstract

American Physical Society, 2009 APS April Meeting, May 2-5, 2009, abstract #Q11.003

Physics

Optics

Scientific paper

Stars orbiting very close to the supermassive black hole at the center of the Milky Way will experience precession of their orbital planes induced by relativistic frame dragging and by the quadrupolar gravity of the hole, at levels that are potentially observable using adaptive optics on the next generation of large ground-based telescopes. Astrometric observations of the orbits of at least two such stars can in principle lead to a determination of the angular momentum vector of the black hole and its quadrupole moment, allowing a test of the general relativistic no-hair theorems. We present the first relativistic N-body simulations of stellar motions around the Milky Way black hole and evaluate the degree to which orbital precession would be influenced by Newtonian perturbations from other stars and from compact stellar remnants.

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