In the middle of the Milky Way, a troubling gas movement led scientists to believe that something 10.000 bigger than the Sun is a second black hole present there — the silent kind that emits no radiation. At least, not one that can be artificially measured. Being the fifth one discovered so far, it also makes the Milky Way susceptible to being abundant in massive tacit black holes.
The new entry is a middle type. Black holes are ranged as an intermediate-mass black hole, and because of their small range, they can’t be traced.
This is why they are considered to be elusive or quiescent. They even raise the question of their existence, for that matter. If it were around 100.000 solar masses, it would have been a supermassive one. The ones that overcome this mass dimension are considered incomprehensibly massive, or supermassive black holes.
Another Black Hole Seems to Live in the Center of Milky Way
Space gas and its behavior have become a method to identify possible intermediate black holes. It is called gas tracking, and it studies the movement of high-velocity gas clouds that wander in space. It is not the first time a black hole is identified by this method. But the candidates discovered like this were not confirmed yet. Accepted as possible, yes, but not confirmed.
Along with gas, dust is another way to find black holes. Or a flare of multi-wavelength radiation — stars also. The radiation of a black hole usually fuels the ones acting hieratically by driving too fast across space. It’s like driving drunk.
You can always tell when speeding is due to alcohol! This is what black holes seem to be: the guilty dark side of the Universe, the one human judgment indicts for every unusual behavior. And the Universe appears to have a lot of fun is what it is: unexpected and unpredictable.