Sgr A^*: A supermassive black hole or a spatially extended object?

Abstract

We report here on a calculation of possible orbits of the fast moving infrared source S1 which has been recently observed by Eckart and Genzel (1997) near the Galactic center. It is shown that tracking of the orbit of S1 or any other fast moving star near Sgr A^* offers a possibility of distinguishing between the supermassive black hole and extended object scenarios of Sgr A^*. In our calculations we assumed that the extended object at the Galactic center is a non-baryonic ball made of degenerate, self-gravitating heavy neutrino matter, as it has been recently proposed by Tsiklauri & Viollier (1998a,b).

AASTEX, 5 postscript figs., submitted to ApJ Lett

References in corpus (3)

• High Proper Motion Stars in the Vicinity of Sgr A*: Evidence for a Supermassive Black Hole at the Center of Our Galaxy
• Dynamical Constraints On Alternatives To Massive Black Holes In Galactic Nuclei
• Dark matter concentration in the galactic center

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