Teleios: The symmetrical supernova remnant perplexing scientists

An international research team, led by astrophysicist Miroslav Filipović from Western Sydney University, has identified an unusual object in our galaxy. Teleios, as this perfectly spherical bubble is named, is a remnant of a supernova explosion. This discovery raises many questions among scientists who are trying to determine its origin.

Analysis conducted by Filipović's team has found that Teleios emits only in radio wavelengths. "All possible scenarios have their challenges, especially considering the lack of X-ray emission that is expected to be detectable given our evolutionary modelling," the scientists write in their paper. The most likely scenario is that Teleios is a remnant of a Type Ia supernova, but the absence of direct evidence prevents a definitive confirmation of this hypothesis.

Determining the distance to Teleios is difficult. Scientists are considering two possibilities: about 7,200 light-years or 25,100 light-years. Each of these distances suggests a different evolutionary history for the object. "We note that no direct evidence is available to definitively confirm any scenario and new sensitive and high-resolution observations of this object are needed," the researchers add.

Teleios stands out for its almost perfect symmetry, which is rare among supernova remnants that are usually asymmetrical. Scientists are planning further observations to better understand this extraordinary object. "We deem the Type Ia scenario the most likely," the researchers emphasize.

Though closer than other mysterious objects, such as Odd Radio Circles, Teleios remains a cosmic enigma. Its nearly perfect symmetry and lack of X-ray emissions present a challenge for scientists who are trying to unravel its mystery.