Unique Black Hole Discovered Spewing a Fiery Jet at Another Galaxy

Black Hole Illustration Stars

An artist’s illustration of a black hole.

The black hole is over 1 billion light-years away.

A team of astronomers has found a unique[{” attribute=””>black hole that is shooting a fiery jet at another galaxy with the aid of citizen scientists. The black hole is housed in the RAD12 galaxy, which is around a billion light-years from Earth. The research was recently published in the Monthly Notices of the Royal Astronomical Society (Letters).

Galaxies are classified into two types depending on their morphology: spirals and ellipticals. Spirals have a lot of cold gas and dust and optically-blue looking spiral arms. An average of one Sun-like star forms per year in spiral galaxies. Elliptical galaxies, on the other hand, are yellow in color and lack distinctive characteristics like spiral arms.

It is still a mystery to astronomers why the elliptical galaxies we see today haven’t been producing new stars for billions of years. Star creation is very rare in elliptical galaxies. There is evidence that “monster” or supermassive black holes are at fault. These “monster” black holes release enormous electron jets traveling at extremely high speeds at other galaxies, depleting the cold gas and dust needed for future star formation.

The Black Hole Within Galaxy RAD12 Spewing a Large Unipolar Radio Bubble

Image of the black hole within galaxy RAD12 spewing a large unipolar radio bubble onto its merging companion galaxy. Credit: Dr. Ananda Hota, GMRT, CFHT, MeerKAT

The unique nature of RAD12 had been observed in 2013 using optical data from the Sloan Digitised Sky Survey (SDSS) and radio data from the Very Large Array (FIRST survey). However, follow-up observation with the Giant Meterwave Radio Telescope (GMRT) in India was required to confirm its truly exotic nature: The black hole in RAD12 appears to be ejecting the jet only towards a neighboring galaxy, named RAD12-B. In all cases, jets are ejected in pairs, moving in opposite directions at relativistic speeds. Why only one jet is seen coming from RAD12 remains a puzzle to astronomers.

A conical stem of young DOI: 10.1093/mnrasl/slac116

Leave a Comment