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Towards constraining the central black hole's properties by studying its infrared flares with the GRAVITY instrument

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arxiv 1110.0746 v1 pith:DI4HVUSO submitted 2011-10-04 astro-ph.GA

Towards constraining the central black hole's properties by studying its infrared flares with the GRAVITY instrument

classification astro-ph.GA
keywords blackgravityholeflarescenterconstraingalacticinfrared
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The ability of the near future second generation VLTI instrument GRAVITY to constrain the properties of the Galactic center black hole is investigated. The Galactic center infrared flares are used as probes of strong-field gravity, within the framework of the hot spot model according to which the flares are the signature of a blob of gas orbiting close to the black hole's innermost stable circular orbit. Full general relativistic computations are performed, together with realistic observed data simulations, that lead to conclude that GRAVITY could be able to constrain the black hole's inclination parameter.

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