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Four Fort McMurray neighbourhoods were ordered to evacuate as a wildfire gets closer to the city.
Astronomers have found a mysterious object in space that is “unlike anything” they have seen before.
A team mapping radio waves in the universe discovered the celestial object that releases a giant burst of energy three times in an hour, according to a release from the International Centre for Radio Astronomy Research (ICRAR).
The discovery is also the subject of a study published in the journal Nature.
Researchers believe the object could be either a neutron star or white dwarf, characterized as a collapsed core of stars, with a powerful magnetic field.
Spinning around in space, the object sends out a beam of radiation that crosses Earth’s line of sight, and for one minute every twenty minutes it is one of the brightest radio sources in the sky, the release states.
“This object was appearing and disappearing over a few hours during our observations, that was completely unexpected. It was kind of spooky for an astronomer because there is nothing known in the sky that does that,” said astrophysicist and team leader Natasha Hurley-Walker in the release. “And it’s really quite close to us – about 4,000 lightyears away. It’s in our galactic backyard.”
Objects in space that “turn on and off” are not a new thing to astronomers, they are called “transients.” Slow transients like a supernova might appear over a few days and then disappear after a few months, whereas fast transients like pulsars flash on and off within milliseconds of seconds.
But an object that turns on for a minute and then off is unheard of. The object is very bright, smaller than the sun, and emits highly-polarized radio waves, which suggest it has a very strong magnetic field.
Hurley-Walker is now monitoring the object with the Murchison Widefield Array (MWA) telescope located in the outback of Western Australia, to see if it switches back on.
“If it does, there are telescopes across the Southern Hemisphere and even in orbit that can point straight to it,” she said in the release.
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