Astronomers detected a powerful low frequency radio signal coming from space


The fast radio burst has been named FRB 180725A after the year, month, and day it was detected. Fast radio bursts or FRBs are bright flashes of light that originate from unknown parts of space and last only a few milliseconds. The signal was detected at frequencies as low as 580 MHz, making it the first known fast radio burst below 700 MHz. The very nature of the signals is strange enough; they shoot like bullets from space but then rapidly fade. They can generate as much energy as 500 million Suns in mere milliseconds.These events have occurred during both the day and night and their arrival times are not correlated with known on-site activities or other known sources of terrestrial RFI.

CHIME radio telescope

They seem to be coming from very far away, possibly billions of light-years. This suggests whatever is causing them has to be extremely energetic. Researchers suggest that these flashes come from powerful enigmatic sources like rapidly spinning neutron stars with extraordinarily strong magnetic fields, located beyond Milky Way. Other hypotheses for FRBs include black holes, pulsars with companion stars, imploding pulsars, a type of star called a blitzar, a connection with gamma-ray bursts (which we now know can be caused by colliding neutron stars), and magnetars emitting giant flares. However, nothing say that such signals are not artificial produced by alien civilisations.


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