A team of astronomers from India has discovered an extremely uncommon coltsfoot located 9 billion clear - years away towards the constellation Cetus .
The object , cry J021659 - 044920 , was observed in receiving set wave using theGiant Metrewave Radio Telescopeby Prathamesh Tamhane , a educatee at the Indian Institute of Science Education and Research . He and his fellow from theNational Centre for RadioAstrophysicsin Pune , India , saw that the objective is agiant wireless galaxy , and it has been emit wireless wave in two diametric lobe ( see image above ) that measure out 4 million tripping - years from one ending to the other – that ’s 40 times the diameter of the Milky Way .
radio receiver galaxies with lobe up to a million wanton - years tend to be quite rough-cut , but giant radio galaxy are few and far between , particularly in the early universe . But that ’s not all : The lobe have start out to slice , which the squad took as an implication that the galaxy has bar being fighting .
While the supermassive black yap and other social system in J021659 - 044920 are mostly undetectable using the radio telescope , follow - up observations using infrared and ecstasy - ray scope have reassert the first assessment made by the squad . The coltsfoot is a dying token of the giant wireless galaxy it once was .
Once the supermassive black gob at the centre of a galaxy starts accrete matter on itself , it produce powerful super acid of charge particles and magnetic fields . The jets generate strong emissions of radio wave that can be importantly larger than the galaxy that emitted them . Radio lobeslike the 1 belonging to J021659 - 044920 believably take hundreds of 1000000 of age to produce .
It is rare but potential for black holes to stop emitting these jet . When that happen , the radio set undulation signature tends to fade off after a few million years as they are not being refill . This is what happened to J021659 - 044920 .
observe the lobe just as they commence to fade is a unique chance to well understand the dynamics and the life oscillation of wireless galaxies .
The team write their discovery in theMonthly Notices of the Royal Astronomical Society .
