The gravitational waves produced in mergers promised a direct way to
find black hole binaries.
Not exact matches
To pin down the nature of their dozen candidates, Hailey's team plotted their spectral peaks and tracked their activity across time,
finding patterns consistent with previous observations of
binary black hole emissions elsewhere in the galaxy.
But
binary black holes are difficult to
find.
These
findings were published in Physical Review Letters the week of October 11 in a paper titled «Formation and Coalescence of Cosmological Supermassive -
Black -
Hole Binaries in Supermassive - Star Collapse.»
The team sifted through data from all the x-ray sources situated within 70 light - years of Sgr A *, searching for those that had characteristics of
black holes and neutron stars in
binary systems and
found four sources within just three light - years of the central
black hole.
He also
finds that once a
binary black -
hole system forms, the complex dynamics of the cluster's centre would probably kick the pair out at high speed.
«While our
findings are not conclusive, they suggest that
binary black holes aren't always born together,» Bose said.
Findings from this and two previous discoveries of
black hole mergers are providing the WSU scientists and colleagues at the Laser Interferometer Gravitational - Wave Observatory (LIGO) an unprecedented glimpse into the early universe and shedding new light on how
binary black holes form.
The
finding suggests that compact
binary star systems of 47 Tucanae may be ejected from the cluster before coalescing to form a large
black hole at its core.