Astronomers Detect the Most Massive Merger of Two Black Holes

  • AUTHOR: dua
  • POSTED ON: September 4, 2020

Black holes have
forever been a mysteriously attractive and highly discussed phenomenon among
scientists and space lovers alike. Some have astronomers recently discovered
the biggest collision between two black holes in history – a merger that
occurred approximately 7 billion years ago!

Of course, the signs have just
reached us and we’re beginning to witness the catastrophic events birthed due
to the Universe’s most exclusive objects!

The show was pretty far
away and the two showrunners included two black holes, both 66 and 85 times the
mass of the Sun respectively. Both were spinning rapidly around one another
when the collision occurred, giving birth to violent bursts of energy bubbles
which sent shockwaves throughout the universe. The merger resulted in another
black hole and this one is 142 times the mass of the Sun!

This finding is pretty
big as it can give prominence to the astronomer who discovered it. So far we’ve
only been able to indirectly observe black holes in the universe – some of them
big while others, quite small. However, it’s always the supermassive black holes
that get our attention as they’re the kind that center the galaxy!

It’s been centuries
since scientists have been studying and observing the happenings in the
universe. They’ve successfully managed to point out black holes ranging from
100 to 1,000 times the mass of the sun. Although they’ve known about their
existence for decades, they hadn’t been able to track any evidence up until now.
In the last few years, major revelations are being made as standard candidates
for intermediate black holes are being detected.

Salvatore Vitale is an
assistant professor at the LIGO Lab of MIT who studies the gravitational waves
in the Universe. He says, “They are
really the missing link between [black holes with] tens of solar masses and
millions. It was always a bit baffling that people couldn’t find anything in

This discovery is
crucial as it gives us a comprehensive understanding of the Universe and why it
looks the way it does. It could explain to us why there are countless smaller
and bigger black holes scattered at the center of the galaxies.

Vitale said that for the same reason astronomers are looking for these, keenly, as they will help in resolving the puzzle.

In order to detect the
presence of a black hole, scientists study tiny shockwaves that may be produced
throughout the universe. It is common knowledge that the collision of
supermassive black holes causes the ultimate warp of space and time – leading
to the creation of ripples all over the 
Universe. These ripples can also be
recognized as gravitational waves and when they reach the planet Earth, their force
gets fainted.

Scientists have gotten
pretty good at detecting these gravitational waves all thanks to the
observatories placed in Italy and the US. They’re known as Virgo and LIGO –
specially designed to detect catalytic mergers.

The first detection was
made by LIGO back in 2015 after which 67 additional mergers have been observed.
Another announcement was made today regarding a new merger that took place 7
billion years ago! The event is now called GW190521 and was detected on May 21st
of 2019. However, the waves were extremely faint and could’ve easily been

Scientists are now
trying to use various algorithms to figure out a way to measure the energy
released during each merger.

When the collision occurred, almost seven times the Sun’s mass was destroyed and turned into energy that left the system. So if you can see it can be pretty impressive when it’s about energetics. The massive mass was destroyed in just a small fraction of one second. Said, Vitale

He expects to see more
mergers in the future and is working on making more objects that can detect
additional properties of the black holes:

Once we can detect more of these massively heavy objects, we can be able to say a lot more in terms of origins, their rarity, properties and where they come from and then we will be able to fully probe the death and life of such black holes.

Updated September 4, 2020
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