As we search the skies with progressively more powerful telescopes , we have name plenty of things that our best mannikin of the cosmos have not predicted , fromOdd Radio Circles(ORCs ) andKýklos , to ( potentially ) oversized galaxies in the other universe .
One particularly gigantic surprisal was first blot by the eROSITA X - irradiation infinite scope , a Russian and German task to map out the universe in ten - beam of light . In 2020 , the telescope divulge aginormous structurelying somewhere towards the center of our beetleweed .
The problem was that the social structure , resembling a giant house of cards emanating from … something , was at an unknown aloofness . It could have been either a elephantine local structure of 102parsec shell nearby but coincidentally in the direction of our Galax urceolata ’s supermassive black hole , or an absolutely humungous 104structure by Sagittarius A * itself .
Recent written report have made it seem much more potential that we are looking at a truly enormous structure towards the center of the galaxy , appear strikingly similar to " femtometer bubble " discovered by the Fermi Gamma - ray Space Telescope . The favored explanation so far is that the " bubbles " are the result of a huge amount of vigor released at the astronomic center ( GC ) .
" Rather than being an independent feature , the [ Lotus Petal Cloud ] compose the northerly eROSITA bubble together with the [ North Polar Spur ] . Considering that the two distant features ( NPS and LPC ) span an slant of ∼90 ° , the house of cards compose of them should be distant and elephantine , with a scale of a few kiloparsecs , " one late subject published in theAstrophysical Journal Lettersexplains . " The most plausible model for such a social structure is a giant house of cards rooted in and blown by episodes of DOE discharge at the GC . "
As yet , we need to observe these bubbles a tidy sum more to know the exact mechanism , but astrophysicist suggest that they are feed by " exhaust volcano " .
“ We suspected that charismatic fields are acting as the walls of the chimney and that hot flatulency is trip up through them , like smoke , ” Scott Mackey , a Ph.D. student at the University of Chicago and lead author of astudyon the subject , excuse in astatement . “ Now we ’ve hear an fumes outlet near the top of the chimney . ”
allot to that study , as a hotshot falls into a black hole , superheated dust travels up this " chimney " at high speed before croak the " vent-hole " at the top , some 700 lightheaded - age above the galactic center . As it travel , the gasolene collides with cool accelerator pedal , creating shock waves and shiny Adam - rays picked up by Earth ’s telescope .
“ The sharp boundaries of these bubble most belike suggestion shock triggered by the monolithic injectant of energy from the inner part of our Galaxy into the astronomical halo , ” Peter Predehl , first author of another study published inNature , explained in a separatestatement . “ Such an explanation has been previously suggested for the Fermi house of cards , and now with eROSITA their full extent and word structure has become plain . ”
More bailiwick is needed to see the precise mechanism of these unknown bubbles , and what impact they have on the evolution of our galaxy and others .
