Using the motion of S2 to constrain scalar clouds around Sgr A*
Using the motion of S2 to constrain scalar clouds around Sgr A*
ABSTRACT The motion of S2, one of the stars closest to the Galactic Centre, has been measured accurately and used to study the compact object at the centre of the Milky Way. It is commonly accepted that this object is a supermassive black hole, but the nature of its environment …