However, they still have to determine whether it's a neutron star.
According to the outlet, they estimate that this invisible object, OB110462, is between 1.6 and 4.4 times the mass of the sun and 2,280 to 6,260 light years away. For now, researchers say that it could also be a neutron star, a"city-size" star which is. Regardless of whether it’s a black hole or a neutron star though, Science Daily reports that the mysterious object is the first “stellar ‘ghost’” discovered floating through space without an accompanying star.
"This is the first free-floating black hole or neutron star discovered with gravitational microlensing," Lu told the outlet. Lu has been hunting for free-floating black holes since 2008, and has been observing OB110462 since 2020."With microlensing, we're able to probe these lonely, compact objects and weigh them. I think we have opened a new window onto these dark objects, which can't be seen any other way.
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