An intensely magnetic neutron lead roughly 15,000 light - years from Earth is stumping uranologist with its ultra farsighted full stop , unleash radiocommunication waves into the cosmos every 22 minutes .
Neutron star with intense magnetic fields are phone magnetars . Now , 22 - minute periods may sound relatively frequent in Earthly time scurf , but most magnetars have full point between a few second base and a few minutes . The team ’s research describing the target waspublishedthis week in Nature .
“ This remarkable physical object challenge our understanding of neutron stars and magnetars , which are some of the most alien and uttermost object in the Universe , ” articulate Natasha Hurley - Walker , an stargazer at Curtin University ’s International Centre for Radio Astronomy Research and the study ’s lead author , in an ICRARrelease .
An artist’s impression of an ultra-long period magnetar.Illustration:ICRAR
Magnetars areresponsible for plenty of the fast radio bursts ( FRBs)astronomers witness emanating throughout the existence , even from within our own beetleweed . But long menstruation tuner fusillade ( or ultra - long period fusillade , in the parlance of the researchers ) are less rough-cut .
The ultra - long full stop magnetar is discover GPM J1839 - 10 , and was first spottedusing the Murchison Widefield Array , a wireless telescope array located in distant Western Australia . The magnetar ’s fusillade last up to five minutes prospicient and have been repeating since at least 1988 , according to radio archive searched by the squad .
The squad first feel a long - period magnetarin January 2022 , but the team want to know if the object was unique or if there were others like it . Sweeps using the Murchison Widefield Array between July 2022 and September 2022 turn up GPM J1839 - 10 , with its radio flare-up that could persist up to five times long than the first magnetar they tell apart .
An artist’s depiction of the MWA, and an image of the distant radio source.Illustration:ICRAR
The ace ’s period , the team drop a line , is “ at the very demarcation line of any definitive theoretic model that predicts dipolar radio discharge from an isolated neutron adept . ”
In a perplexing whirl , the magnetar should n’t be able-bodied to let loose the energetic outbursts the team is seeing . “ The object we ’ve discovered is gyrate direction too slowly to produce radio set Wave — it ’s below the death line , ” Hurley - Walker said . “ Assuming it ’s a magnetar , it should n’t be possible for this object to create radio set wave . But we ’re seeing them . ”
More data point on more magnetars will help clarify how much of an outlier GPM J1839 - 10 is equate to other radio set wafture sources . The Square Kilometer Array will certainly facilitate that search . Set to be the world ’s largest radio scope , construction on the raiment began in December 2022 .
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