Wednesday , April 14 2021

20 Minutes – A huge fountain was found in galaxy clusters

One billion light years – at this distance there is an unusually bright galaxy cluster Abell 2597, consisting of about 50 individual galaxies.


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One of them, Abell 2597, the brightest cluster of Galaxy, is right in the middle and is the source of a huge molecular gas fountain. Researchers at Harvard and Smithsonian Astrophysics Center Grant Tremblay have now set up.

Intergalactic flood

Run through a massive black hole in the heart of Abell 2597's brightest cluster of Galaxies, the slow molecular gas thrown into space and reverted to the black hole in the form of intergalactic digestion, as someone writes in Astrophysical Journal.

"This may be the first system where we can find a clear screen from a cold-formed molecular gas stream in the black hole, as well as its ejaculation or spraying (narrow material flows, editorial note) that triggers a black hole," Tremblay said in his statement. pump from a fountain ".

US research through European technology

The results were obtained using the so-called Atacama Large Millimeter / Sublimometer Array (ALMA) and MUSE Spectrograph in the European Southern Observatory (Very Large Telescope, ESO).

With ALMA, scientists took into account the carbon monoxide (CO) molecule position and movement in the fog. These cold molecules with temperatures up to -260 degrees descend towards the black hole. The MUSE spectrum was used to study the warmer gases that were sprayed near the black hole.

Important for the future

Together, these two data give a complete picture of the process: the cold gas hits the black hole, vigorously accelerates around it, and it is heated with extreme friction before it is released at a high speed with a spray like glowing plasma space empty,

These showers shoot from the black hole as an impressive galactic fountain. There is no hope that the galaxy's gravitational lever will get out, the plasma will cool down and eventually fall back into the black hole where the cycle begins again.

Observations could illuminate the life cycle of galaxies. Scientists suspect that this process is not only widespread but may be necessary to understand the formation of a galaxy.


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