MWA Radio Telescope Helps Find Remnants of 27 Supernova Stars

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MWA Radio Telescope Helps Find Remnants of 27 Supernova Stars 

A team of Australian astronomers used the MWA (Murchison Widefield Array) radio telescope to get a new image of the center of our galaxy. The shooting was carried out with a resolution of two angular minutes at frequencies from 72 to 231 MHz. This made it possible to distinguish both large-scale structures of the Milky Way and individual objects.

Having studied the panorama of the galactic center obtained by MWA, the researchers were able to identify 27 remnants of supernovae, bringing their total known number in the Milky Way to 322.

Such objects are expanding shells left over from collapsing massive stars. Over time, they slow down and gradually merge with the interstellar medium. This greatly complicates the task of astronomers to detect old residues.

But there is a notable exception. One of the residues is quite young. In theory, the supernova burst that formed it could be seen in the southern hemisphere of the Earth 9 thousand years ago.

According to experts on the culture of Australian Aborigines, in their mythology you can find stories about bright new stars appearing in the sky. However, it is still difficult to say whether we are talking about supernovae or whether these traditions appeared under the influence of some other events. Knowing the place and time of the outbreak in the sky, scientists will try to compare the aboriginal tales to see if they could observe this supernova.

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