Studying a galaxy from the inside can be a tough thing, but astronomers have even now managed to master a fantastic deal about our very own Milky Way. One of the items researchers think they know about our galaxy — and quite a few other galaxies like our have — is that they revolve all-around a black gap.
In the circumstance of the Milky Way, the item in the middle of the galaxy is considered to be a supermassive black hole and which is not unheard of.
On the other hand, as astrophysicist Smadar Naoz writes, current observations trace at the probability that the black hole experts imagine resides at the spot known as Sgr A* (the center of our galaxy) has a close friend.
In a new exploration paper, a group of astrophysicists clarifies that by observing the motion of stars near the galactic center they can get a greater idea of what’s going on, regardless of not essentially remaining equipped to see the black gap(s) specifically. As stars swirl about the middle of our galaxy, their movements can expose the existence of objects which are exerting a robust gravitational pull on them.
“Using our knowledge of the gravitational conversation between the possible supermassive black hole pair and the bordering stars, astronomers can predict what will transpire to stars,” Naoz points out.
“Astrophysicists like my colleagues and me can review our predictions to observations and then can ascertain the probable orbits of stars and determine out whether or not the supermassive black gap has a companion that is exerting gravitational influence.”
In observing a specially perfectly-recognized star known as S0-2, the team claims that there is no conclusive proof that a modest black gap companion is hanging out all-around the major black gap at the galactic heart, but also could not rule out the likelihood.
But star observations aren’t the only device in the arsenal of scientists. Going forward, a point out-of-the-artwork detector termed LISA (Laser Interferometer Space Antenna), currently in growth, could generate new discoveries that expose the presence of a next black gap at our galaxy’s heart.