A mysterious gamma-ray stream comes from the Milky Way's center. Could dark matter have something to do with it?
A mysterious gamma-ray emission known as the Galactic Center Excess radiates from the heart of the Milky Way. New machine learning analysis suggests self-annihilating dark matter cannot be ruled out as the cause. This finding maintains dark matter as a leading explanation despite competing theories.
What changed
Recent AI studies and simulations have reopened the case for dark matter by failing to rule it out as the source of the gamma-ray stream.
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AI Research Keeps Dark Matter as Possible Source of Galactic Gamma-Ray Glow
confidence 90%A mysterious gamma-ray emission known as the Galactic Center Excess radiates from the heart of the Milky Way. New machine learning analysis suggests self-annihilating dark matter cannot be ruled out as the cause. This finding maintains dark matter as a leading explanation despite competing theories.
What's confirmed:
- The Galactic Center Excess is a faint glow of gamma rays emanating from the center of the Milky Way.
- New research using machine learning indicates that self-annihilating dark matter cannot be ruled out as the source of this emission.
- The results of the machine learning study were published in the journal Physical Review Letters.
- The study involved a collaboration between the University of Vienna and Lawrence Berkeley National Laboratory.
Still unconfirmed:
- The pulsar hypothesis would require more than 35,000 sources to explain the signal.
- Simulations from Johns Hopkins found a near-perfect match between theoretical and observed gamma ray maps.
- The glow may be caused by the spin of dying stars or millisecond pulsars.