Thread by @BiIndia

A black hole bigger than the sun is pulling on the fabric of space and time
businessinsider.in/a-black-hole-b…

Black holes are generally known for pulling in any item that crosses their path using their gravitational force. But, it’s usually only material objects even if that is from nearby stars and planets.

The V404 Cygni black hole, on the other hand, seems to be dragging in space itself according to a team of researchers from the International Center for Radio Astronomy Research (ICRAR) using the National Science Foundation’s Very Long Baseline Array (VLBA).

The black hole is around nine times the size of the Sun and around 8,000 lightyears away from the Earth.

Currently, it’s drawing its material from a star that’s around 70% of the Sun’s size and their orbits don’t line up.

That material ends up in a rotating stream of material around the black hole called an accretion disk. The V404 Cygni black hole has a disk 10 million kilometers wide.

As the disk inches closer to the black hole becoming denser and hotter, the black hole and inner parts of the disk start to launch material pieces away from the accretion disk in what scientists call a ‘wobble’.

This ‘wobble’ is supposed to be a steady stream of ejected material but in this case, the black hole is spitting out interjected blobs of plasma.

In V404 Cygni’s case, the excessive speed of the wobble brings Einstein’s general theory of relativity into play which states that massive objects like black holes can distort space and time itself.

Orbit misalignment combined with a rapid wobble causes a ‘frame-dragging’ effect where the material being pushed from the accretion disk can be seen changing direction.

Since the V404 Cygni black hole didn’t follow the same rules as conventional blackholes, the ICRAR team has to combine 103 images of the black hole, each around 70 seconds long, in order to observe the phenomenon.