In Astronomy, GRO J1655-40 is the name of a Microquasar “in escape”, i.e. with a speed in space significantly larger than the speed of the ambient conditions. This system draws its name from the satellite with x-rays Compton Gamma-Ray Observatory (shortened GRO ) thanks to which it was discovered, in 1994, and of its Coordonnée S in the sky. GRO J1655-40 was the second microquasar of our Galaxie (the Milky Way), after GRS 1915+105, where, at a supposed distance from 3.2 kilo Parsec S (kpc), supraluminic jets were detected. However, it is probable that the system is in fact much nearer, at a distance from 1 kpc, since the opposite direction of sound Vecteur of own Mouvement point clearly in direction of the open Amas NGC 6242, located him at a distance from 1 kpc. At this distance, the jets are not superluminic any more, but GRO J1655-40 would be then one of the known galactic black holes nearest to the Sun.
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