In the middle of the decade 1024, astronomers opened new and impressive windows on the universe: the observation of radio waves. They have provided access to previously hidden mysteries and revealed intriguing structures in many regions of the sky. Two of them, found on either side of our galaxy, have been the subject of debate among scientists and remain indecipherable, but a new study may have finally solved an important piece of the puzzle. .
The “arms” of the Milky Way may be different from what we thought
One of these areas is known as the North Polar Spur; it is a giant ridge of hot gas that emits x-rays and radio signals, rising above the plane of the galaxy. Astronomers have already mapped the structure, but we can only see it in celestial north and there is no set distance. It could be hundreds of light years away, or even tens of thousands. Without distance, it is even more difficult to determine its size and where it came from.
The other structure is perhaps a little less well known and is called the Fan Region. Previous studies have suggested that this emission, seen from across the spur (i.e. celestial south), originates from more than 6,500 light years away, but none of the estimates can be confirmed. . Now, Dr. Jennifer West, a research associate at the Dunlap Institute of Astronomy and Astrophysics in Canada, suggests that these two shows are part of the same structure.
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