Science
Related: About this forum4 mysterious objects spotted in deep space are unlike anything ever seen
By Mara Johnson-Groh - Live Science Contributor a day ago
The Australian Square Kilometer Array Pathfinder was used to scan the skies for radio waves.
(Image: © CSIRO)
There's something unusual lurking out in the depths of space: Astronomers have discovered four faint objects that at radio wavelengths are highly circular and brighter along their edges. And they're unlike any class of astronomical object ever seen before.
The objects, which look like distant ring-shaped islands, have been dubbed odd radio circles, or ORCs, for their shape and overall peculiarity. Astronomers don't yet know exactly how far away these ORCs are, but they could be linked to distant galaxies. All objects were found away from the Milky Way's galactic plane and are around 1 arcminute across (for comparison, the moon's diameter is 31 arcminutes).
In a new paper detailing the discovery, the astronomers offer several possible explanations, but none quite fits the bill for all four new ORCs. After ruling out objects like supernovas, star-forming galaxies, planetary nebulas and gravitational lensing a magnifying effect due to the bending of space-time by nearby massive objects among other things, the astronomers speculate that the objects could be shockwaves leftover from some extragalactic event or possibly activity from a radio galaxy.
"[The objects] may well point to a new phenomenon that we haven't really probed yet," said Kristine Spekkens, astronomer at the Royal Military College of Canada and Queen's University, who was not involved with the new study. "It may also be that these are an extension of a previously known class of objects that we haven't been able to explore."
More:
https://www.livescience.com/circular-radio-objects-space.html
Australian Square Kilometer Array Pathfinder
Core antennas of the Australian Square Kilometre Array Pathfinder radio telescope in Western Australia pointing at the Milky Way.Commonwealth Scientific and Industrial Research Organisation/Alex Cherney
homegirl
(1,428 posts)abqtommy
(14,118 posts)The road comes over a rise looking over the valley and shows the Array at a distance. As you drive closer and then past it the size of the units is very impressive!
https://en.wikipedia.org/wiki/Very_Large_Array
Sloumeau
(2,657 posts)and that they are naming them "Half-ORCs".
Stuart G
(38,414 posts)..............Let's try some other planet where the beings are more ....STABLE
Blue Owl
(50,330 posts)Like the other end of black holes -- all we ever hear about is the front end that sucks everything in.
You know some of those black holes gotta gave BACK, baby!